Instruction:
Write a Python 3 function for
starting the main function of the main function of the main function of the main function of the main function of the main function of the main function of the main function of the main function.

Response:
def main():
    """ Starts Argos main window
    """
    about_str = "{} version: {}".format(PROJECT_NAME, VERSION)
    parser = argparse.ArgumentParser(description = about_str)

    parser.add_argument('fileNames', metavar='FILE', nargs='*', help='Input files')

    parser.add_argument('-i', '--inspector', dest='inspector',
        help="""The identifier or fullName of the inspector that will be opened at start up.
                E.g. 'Qt/Table'""")

    parser.add_argument('--list-inspectors', dest='list_inspectors', action = 'store_true',
        help="""Prints a list of available inspectors for the -i option""")

    parser.add_argument('-s', '--select', dest='selectPath',
        help="""Full path name of a repository tree item that will be selected at start-up.
                E.g. 'file/var/fieldname'""")

    parser.add_argument('-p', '--profile', dest='profile', default=DEFAULT_PROFILE,
        help="Can be used to have different persistent settings for different use cases.")

    parser.add_argument('--reset', '--reset-profile', dest='reset_profile', action = 'store_true',
        help="If set, persistent settings will be reset for the current profile.")

    parser.add_argument('--reset-all-profiles', dest='reset_all_profiles', action = 'store_true',
        help="If set, persistent settings will be reset for the all profiles.")

    parser.add_argument('--reset-registry', dest='reset_registry', action = 'store_true',
        help="If set, the registry will be reset to contain only the default plugins.")

    parser.add_argument('--version', action = 'store_true',
        help="Prints the program version.")

    parser.add_argument('-l', '--log-level', dest='log_level', default='warning',
        help="Log level. Only log messages with a level higher or equal than this will be printed. "
             "Default: 'warning'",
        choices=('debug', 'info', 'warning', 'error', 'critical'))

    args = parser.parse_args(remove_process_serial_number(sys.argv[1:]))

    if DEBUGGING:
        logger.info("Setting log level to: {}".format(args.log_level.upper()))
    logger.setLevel(args.log_level.upper())

    if DEBUGGING:
        logger.warn("Debugging flag is on!")

    if args.version:
        print(about_str)
        sys.exit(0)

    if args.list_inspectors:
        printInspectors()
        sys.exit(0)

    logger.info('Started {} {}'.format(PROJECT_NAME, VERSION))
    logger.info("Python version: {}".format(sys.version).replace('\n', ''))
    #logger.info('Using: {}'.format('PyQt' if USE_PYQT else 'PySide'))

    # Imported here so this module can be imported without Qt being installed.
    from argos.qt.misc import ABOUT_QT_BINDINGS
    logger.info("Using {}".format(ABOUT_QT_BINDINGS))

    # Browse will create an ArgosApplication with one MainWindow
    browse(fileNames = args.fileNames,
           inspectorFullName=args.inspector,
           select=args.selectPath,
           profile=args.profile,
           resetProfile=args.reset_profile,
           resetAllProfiles=args.reset_all_profiles,
           resetRegistry=args.reset_registry)
    logger.info('Done {}'.format(PROJECT_NAME))


Instruction:
How would you implement a function in Python 3 that
sets the model of the tree view

Response:
def setModel(self, model):
        """ Sets the model.
            Checks that the model is a
        """
        check_class(model, BaseTreeModel)
        super(ArgosTreeView, self).setModel(model)


Instruction:
Implement a Python 3 function for
setting the current item to be the item at currentIndex.

Response:
def setCurrentIndex(self, currentIndex):
        """ Sets the current item to be the item at currentIndex.
            Also select the row as to give consistent user feedback.
            See also the notes at the top of this module on current item vs selected item(s).
        """
        selectionModel = self.selectionModel()
        selectionFlags = (QtCore.QItemSelectionModel.ClearAndSelect |
                          QtCore.QItemSelectionModel.Rows)
        selectionModel.setCurrentIndex(currentIndex, selectionFlags)


Instruction:
How would you explain what the following Python 3 function does
def getRowCurrentIndex(self):
        curIndex = self.currentIndex()
        col0Index = curIndex.sibling(curIndex.row(), 0)
        return col0Index

Response: Returns the index of the column 0 of the current item in the underlying model.


Instruction:
Implement a Python 3 function for
finding the current tree item and its index while we re at it Returns a tuple with the current item and its index.

Response:
def getCurrentItem(self): # TODO: rename? getCurrentItemAndIndex? getCurrentTuple? getCurrent?
        """ Find the current tree item (and the current index while we're at it)
            Returns a tuple with the current item, and its index. The item may be None.
            See also the notes at the top of this module on current item vs selected item(s).
        """
        currentIndex = self.getRowCurrentIndex()
        currentItem = self.model().getItem(currentIndex)
        return currentItem, currentIndex


Instruction:
Implement a function in Python 3 to
follow the path and expands all nodes along the way.

Response:
def expandPath(self, path):
        """ Follows the path and expand all nodes along the way.
            Returns (item, index) tuple of the last node in the path (the leaf node). This can be
            reused e.g. to select it.
        """
        iiPath = self.model().findItemAndIndexPath(path)
        for (item, index) in iiPath[1:]: # skip invisible root
            assert index.isValid(), "Sanity check: invalid index in path for item: {}".format(item)
            self.expand(index)

        leaf = iiPath[-1]
        return leaf


Instruction:
Write a Python 3 function that can
expand or collapses the node at the index and all its descendants.

Response:
def expandBranch(self, index=None, expanded=True):
        """ Expands or collapses the node at the index and all it's descendants.

            If expanded is True the nodes will be expanded, if False they will be collapsed.

            If parentIndex is None, the invisible root will be used (i.e. the complete forest will
            be expanded).
        """
        treeModel = self.model()
        if index is None:
            index = QtCore.QModelIndex()

        if index.isValid():
            self.setExpanded(index, expanded)

        for rowNr in range(treeModel.rowCount(index)):
            childIndex = treeModel.index(rowNr, 0, parentIndex=index)
            self.expandBranch(index=childIndex, expanded=expanded)


Instruction:
Write a Python 3 function for
setting the signals of the children of the current object to block.

Response:
def blockChildrenSignals(self, block):
        """ If block equals True, the signals of the combo boxes and spin boxes are blocked
            Returns the old blocking state.
        """
        logger.debug("Blocking collector signals")
        for spinBox in self._spinBoxes:
            spinBox.blockSignals(block)
        for comboBox in self._comboBoxes:
            comboBox.blockSignals(block)
        result = self._signalsBlocked
        self._signalsBlocked = block
        return result


Instruction:
Can you tell what is the following Python 3 function doing
def _setColumnCountForContents(self):
        numRtiDims = self.rti.nDims if self.rti and self.rti.isSliceable else 0

        colCount = self.COL_FIRST_COMBO + max(numRtiDims, len(self.axisNames))
        self.tree.model().setColumnCount(colCount)
        return colCount

Response: Sets the column count given the current axes and selected RTI. Returns the newly set column count.


Instruction:
Create a Python 3 function to
remove all comboboxes and sets the axes names to axesNames.

Response:
def clearAndSetComboBoxes(self, axesNames):
        """ Removes all comboboxes.
        """
        logger.debug("Collector clearAndSetComboBoxes: {}".format(axesNames))
        check_is_a_sequence(axesNames)
        row = 0
        self._deleteComboBoxes(row)
        self.clear()
        self._setAxesNames(axesNames)
        self._createComboBoxes(row)
        self._updateWidgets()


Instruction:
Explain what the following Python 3 code does
def _setAxesNames(self, axisNames):
        for col, _ in enumerate(self._fullAxisNames, self.COL_FIRST_COMBO):
            self._setHeaderLabel(col, '')

        self._axisNames = tuple(axisNames)
        self._fullAxisNames = tuple([axName + self.AXIS_POST_FIX for axName in axisNames])

        for col, label in enumerate(self._fullAxisNames, self.COL_FIRST_COMBO):
            self._setHeaderLabel(col, label)

Response: Sets the axesnames combobox lables and updates the headers. Removes old values first.


Instruction:
Create a Python 3 function to
set the header label of column col to text.

Response:
def _setHeaderLabel(self, col, text):
        """ Sets the header of column col to text.
            Will increase the number of columns if col is larger than the current number.
        """
        model = self.tree.model()
        item = model.horizontalHeaderItem(col)
        if item:
            item.setText(text)
        else:
            model.setHorizontalHeaderItem(col, QtGui.QStandardItem(text))


Instruction:
How would you implement a function in Python 3 that
updates the current VisItem from the contents of the repo tree item.

Response:
def setRti(self, rti):
        """ Updates the current VisItem from the contents of the repo tree item.

            Is a slot but the signal is usually connected to the Collector, which then calls
            this function directly.
        """
        check_class(rti, BaseRti)
        #assert rti.isSliceable, "RTI must be sliceable" # TODO: maybe later

        self._rti = rti
        self._updateWidgets()
        self._updateRtiInfo()


Instruction:
Implement a function in Python 3 to
update the combo and spin boxes given the new rti or axes.

Response:
def _updateWidgets(self):
        """ Updates the combo and spin boxes given the new rti or axes.
            Emits the sigContentsChanged signal.
        """
        row = 0
        model = self.tree.model()

        # Create path label
        nodePath = '' if self.rti is None else self.rti.nodePath
        pathItem = QtGui.QStandardItem(nodePath)
        pathItem.setToolTip(nodePath)
        pathItem.setEditable(False)
        if self.rti is not None:
            pathItem.setIcon(self.rti.decoration)
        model.setItem(row, 0, pathItem)

        self._deleteSpinBoxes(row)
        self._populateComboBoxes(row)
        self._createSpinBoxes(row)
        self._updateRtiInfo()

        self.tree.resizeColumnsToContents(startCol=self.COL_FIRST_COMBO)

        logger.debug("{} sigContentsChanged signal (_updateWidgets)"
                      .format("Blocked" if self.signalsBlocked() else "Emitting"))
        self.sigContentsChanged.emit(UpdateReason.RTI_CHANGED)


Instruction:
Can you create a Python 3 function that
creates a combo box for each of the fullAxisNames

Response:
def _createComboBoxes(self, row):
        """ Creates a combo box for each of the fullAxisNames
        """
        tree = self.tree
        model = self.tree.model()
        self._setColumnCountForContents()

        for col, _ in enumerate(self._axisNames, self.COL_FIRST_COMBO):
            logger.debug("Adding combobox at ({}, {})".format(row, col))
            comboBox = QtWidgets.QComboBox()
            comboBox.setSizeAdjustPolicy(QtWidgets.QComboBox.AdjustToContents)
            comboBox.activated.connect(self._comboBoxActivated)
            self._comboBoxes.append(comboBox)

            #editor = LabeledWidget(QtWidgets.QLabel(comboLabel), comboBox)
            tree.setIndexWidget(model.index(row, col), comboBox)


Instruction:
Explain what the following Python 3 code does
def _deleteComboBoxes(self, row):
        tree = self.tree
        model = self.tree.model()

        for col in range(self.COL_FIRST_COMBO, self.maxCombos):
            logger.debug("Removing combobox at: ({}, {})".format(row, col))
            tree.setIndexWidget(model.index(row, col), None)

        self._comboBoxes = []

Response: Deletes all comboboxes of a row


Instruction:
Implement a Python 3 function for
populating the comboboxes with values of the repo tree item .

Response:
def _populateComboBoxes(self, row):
        """ Populates the combo boxes with values of the repo tree item
        """
        logger.debug("_populateComboBoxes")
        for comboBox in self._comboBoxes:
            comboBox.clear()

        if not self.rtiIsSliceable:
            # Add an empty item to the combo boxes so that resize to contents works.
            for comboBoxNr, comboBox in enumerate(self._comboBoxes):
                comboBox.addItem('', userData=None)
                comboBox.setEnabled(False)
            return

        nDims = self._rti.nDims
        nCombos = len(self._comboBoxes)

        for comboBoxNr, comboBox in enumerate(self._comboBoxes):
            # Add a fake dimension of length 1
            comboBox.addItem(FAKE_DIM_NAME, userData = FAKE_DIM_OFFSET + comboBoxNr)

            for dimNr in range(nDims):
                comboBox.addItem(self._rti.dimensionNames[dimNr], userData=dimNr)

            # Set combobox current index
            if nDims >= nCombos:
                # We set the nth combo-box index to the last item - n. This because the
                # NetCDF-CF conventions have the preferred dimension order of T, Z, Y, X.
                # The +1 below is from the fake dimension.
                curIdx = nDims + 1 - nCombos + comboBoxNr
            else:
                # If there are less dimensions in the RTI than the inspector can show, we fill
                # the comboboxes starting at the leftmost and set the remaining comboboxes to the
                # fake dimension. This means that a table inspector fill have one column and many
                # rows, which is the most convenient.
                curIdx = comboBoxNr + 1 if comboBoxNr < nDims else 0

            assert 0 <= curIdx <= nDims + 1, \
                "curIdx should be <= {}, got {}".format(nDims + 1, curIdx)

            comboBox.setCurrentIndex(curIdx)
            comboBox.setEnabled(True)


Instruction:
Can you create a Python 3 function that
returns True if the dimension is selected in the combo boxes.

Response:
def _dimensionSelectedInComboBox(self, dimNr):
        """ Returns True if the dimension is selected in one of the combo boxes.
        """
        for combobox in self._comboBoxes:
            if self._comboBoxDimensionIndex(combobox) == dimNr:
                return True
        return False


Instruction:
Can you generate the documentation for the following Python 3 function
def _createSpinBoxes(self, row):
        assert len(self._spinBoxes) == 0, "Spinbox list not empty. Call _deleteSpinBoxes first"

        if not self.rtiIsSliceable:
            return

        logger.debug("_createSpinBoxes, array shape: {}".format(self._rti.arrayShape))

        self._setColumnCountForContents()

        tree = self.tree
        model = self.tree.model()
        col = self.COL_FIRST_COMBO + self.maxCombos

        for dimNr, dimSize in enumerate(self._rti.arrayShape):

            if self._dimensionSelectedInComboBox(dimNr):
                continue

            self._setHeaderLabel(col, '')

            spinBox = CollectorSpinBox()
            self._spinBoxes.append(spinBox)

            spinBox.setKeyboardTracking(False)
            spinBox.setCorrectionMode(QtWidgets.QAbstractSpinBox.CorrectToNearestValue)

            spinBox.setMinimum(0)
            spinBox.setMaximum(dimSize - 1)
            spinBox.setSingleStep(1)
            spinBox.setValue(dimSize // 2) # select the middle of the slice
            spinBox.setPrefix("{}: ".format(self._rti.dimensionNames[dimNr]))
            spinBox.setSuffix("/{}".format(spinBox.maximum()))
            spinBox.setProperty("dim_nr", dimNr)
            #spinBox.adjustSize() # necessary?

            # This must be done after setValue to prevent emitting too many signals
            spinBox.valueChanged[int].connect(self._spinboxValueChanged)

            tree.setIndexWidget(model.index(row, col), spinBox)
            col += 1

        # Resize the spinbox columns to their new contents
        self.tree.resizeColumnsToContents(startCol=self.COL_FIRST_COMBO + self.maxCombos)

Response: Creates a list of SpinBox objects for each dimension that is not selected in a combo box.


Instruction:
Write a Python 3 function for
removing all spinboxes from the tree.

Response:
def _deleteSpinBoxes(self, row):
        """ Removes all spinboxes
        """
        tree = self.tree
        model = self.tree.model()

        for col, spinBox in enumerate(self._spinBoxes, self.COL_FIRST_COMBO + self.maxCombos):
            spinBox.valueChanged[int].disconnect(self._spinboxValueChanged)
            tree.setIndexWidget(model.index(row, col), None)
        self._spinBoxes = []

        self._setColumnCountForContents()


Instruction:
Can you tell what is the following Python 3 function doing
def _comboBoxActivated(self, index, comboBox=None):
        if comboBox is None:
            comboBox = self.sender()
        assert comboBox, "comboBox not defined and not the sender"

        blocked = self.blockChildrenSignals(True)

        # If one of the other combo boxes has the same value, set it to the fake dimension
        curDimIdx = self._comboBoxDimensionIndex(comboBox)
        if curDimIdx < FAKE_DIM_OFFSET:
            otherComboBoxes = [cb for cb in self._comboBoxes if cb is not comboBox]
            for otherComboBox in otherComboBoxes:
                if otherComboBox.currentIndex() == comboBox.currentIndex():
                    #newIdx = otherComboBox.findData(FAKE_DIM_IDX)
                    #otherComboBox.setCurrentIndex(newIdx)
                    otherComboBox.setCurrentIndex(0) # Fake dimension is always the first

        # Show only spin boxes that are not selected
        row = 0
        self._deleteSpinBoxes(row)
        self._createSpinBoxes(row)
        self._updateRtiInfo()

        self.blockChildrenSignals(blocked)

        logger.debug("{} sigContentsChanged signal (comboBox)"
                      .format("Blocked" if self.signalsBlocked() else "Emitting"))
        self.sigContentsChanged.emit(UpdateReason.COLLECTOR_COMBO_BOX)

Response: Called when a combo box value has changed by the user.


Instruction:
Write a Python 3 function for
calling when a spin box value has changed.

Response:
def _spinboxValueChanged(self, index, spinBox=None):
        """ Is called when a spin box value was changed.

            Updates the spin boxes and sets other combo boxes having the same index to
            the fake dimension of length 1.
        """
        if spinBox is None:
            spinBox = self.sender()
        assert spinBox, "spinBox not defined and not the sender"

        logger.debug("{} sigContentsChanged signal (spinBox)"
                      .format("Blocked" if self.signalsBlocked() else "Emitting"))
        self.sigContentsChanged.emit(UpdateReason.COLLECTOR_SPIN_BOX)


Instruction:
Here you have a function in Python 3, explain what it does
def getSlicedArray(self, copy=True):
        #logger.debug("getSlicedArray() called")

        if not self.rtiIsSliceable:
            return None

        # The dimensions that are selected in the combo boxes will be set to slice(None),
        # the values from the spin boxes will be set as a single integer value
        nDims = self.rti.nDims
        sliceList = [slice(None)] * nDims

        for spinBox in self._spinBoxes:
            dimNr = spinBox.property("dim_nr")
            sliceList[dimNr] = spinBox.value()

        # Make the array slicer. It needs to be a tuple, a list of only integers will be
        # interpreted as an index. With a tuple, array[(exp1, exp2, ..., expN)] is equivalent to
        # array[exp1, exp2, ..., expN].
        # See: http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html
        logger.debug("Array slice list: {}".format(str(sliceList)))
        slicedArray = self.rti[tuple(sliceList)]

        # Make a copy to prevent inspectors from modifying the underlying array.
        if copy:
            slicedArray = ma.copy(slicedArray)

        # If there are no comboboxes the sliceList will contain no Slices objects, only ints. Then
        # the resulting slicedArray will be a usually a scalar (only structured fields may yield an
        # array). We convert this scalar to a zero-dimensional Numpy array so that inspectors
        # always get an array (having the same number of dimensions as the dimensionality of the
        # inspector, i.e. the number of comboboxes).
        if self.maxCombos == 0:
            slicedArray = ma.MaskedArray(slicedArray)

        # Post-condition type check
        check_is_an_array(slicedArray, np.ndarray)

        # Enforce the return type to be a masked array.
        if not isinstance(slicedArray, ma.MaskedArray):
            slicedArray = ma.MaskedArray(slicedArray)

        # Add fake dimensions of length 1 so that result.ndim will equal the number of combo boxes
        for dimNr in range(slicedArray.ndim, self.maxCombos):
            #logger.debug("Adding fake dimension: {}".format(dimNr))
            slicedArray = ma.expand_dims(slicedArray, dimNr)

        # Post-condition dimension check
        assert slicedArray.ndim == self.maxCombos, \
            "Bug: getSlicedArray should return a {:d}D array, got: {}D" \
            .format(self.maxCombos, slicedArray.ndim)

        # Convert to ArrayWithMask class for working around issues with the numpy maskedarray
        awm = ArrayWithMask.createFromMaskedArray(slicedArray)
        del slicedArray

        # Shuffle the dimensions to be in the order as specified by the combo boxes
        comboDims = [self._comboBoxDimensionIndex(cb) for cb in self._comboBoxes]
        permutations = np.argsort(comboDims)
        logger.debug("slicedArray.shape: {}".format(awm.data.shape))
        logger.debug("Transposing dimensions: {}".format(permutations))
        awm = awm.transpose(permutations)

        awm.checkIsConsistent()

        return awm

Response: Slice the RTI using a tuple of slices made from the values of the combo boxes and spin boxes.


Instruction:
Can you write a function in Python 3 where it
returns a string representation of the slices that are used to get the sliced array.

Response:
def getSlicesString(self):
        """ Returns a string representation of the slices that are used to get the sliced array.
            For example returns '[:, 5]' if the combo box selects dimension 0 and the spin box 5.
        """
        if not self.rtiIsSliceable:
            return ''

        # The dimensions that are selected in the combo boxes will be set to slice(None),
        # the values from the spin boxes will be set as a single integer value
        nDims = self.rti.nDims
        sliceList = [':'] * nDims

        for spinBox in self._spinBoxes:
            dimNr = spinBox.property("dim_nr")
            sliceList[dimNr] = str(spinBox.value())

        # No need to shuffle combobox dimensions like in getSlicedArray; all combobox dimensions
        # yield a colon.

        return "[" + ", ".join(sliceList) + "]"


Instruction:
Create a Python 3 function to
update the _rtiInfo property when a new RTI is set or the comboboxes value change.

Response:
def _updateRtiInfo(self):
        """ Updates the _rtiInfo property when a new RTI is set or the comboboxes value change.
        """
        logger.debug("Updating self._rtiInfo")
        # Info about the dependent dimension
        rti = self.rti
        if rti is None:
            info = {'slices': '',
                    'name': '',
                    'path': '',
                    'file-name': '',
                    'dir-name': '',
                    'base-name': '',
                    'unit': '',
                    'raw-unit': ''}
        else:
            dirName, baseName = os.path.split(rti.fileName)
            info = {'slices': self.getSlicesString(),
                    'name': rti.nodeName,
                    'path': rti.nodePath,
                    'file-name': rti.fileName,
                    'dir-name': dirName,
                    'base-name': baseName,
                    'unit': '({})'.format(rti.unit) if rti.unit else '',
                    'raw-unit': rti.unit}

        # Add the info of the independent dimensions (appended with the axis name of that dim).
        for axisName, comboBox in zip(self._axisNames, self._comboBoxes):
            dimName = comboBox.currentText()
            key = '{}-dim'.format(axisName.lower())
            info[key] = dimName

        self._rtiInfo = info


Instruction:
Write a Python 3 script for
creating an RTI given an object.

Response:
def _createFromObject(obj, *args, **kwargs):
    """ Creates an RTI given an object. Auto-detects which RTI class to return.
        The *args and **kwargs parameters are passed to the RTI constructor.
        It is therefor important that all memory RTIs accept the same parameters in the
        constructor (with exception of the FieldRti which is not auto-detected).
    """
    if is_a_sequence(obj):
        return SequenceRti(obj, *args, **kwargs)
    elif is_a_mapping(obj):
        return MappingRti(obj, *args, **kwargs)
    elif is_an_array(obj):
        return ArrayRti(obj, *args, **kwargs)
    elif isinstance(obj, bytearray):
        return ArrayRti(np.array(obj), *args, **kwargs)
    else:
        return ScalarRti(obj, *args, **kwargs)


Instruction:
Given the following Python 3 function, write the documentation
def _subArrayShape(self):
        fieldName = self.nodeName
        fieldDtype = self._array.dtype.fields[fieldName][0]
        return fieldDtype.shape

Response: Returns the shape of the sub - array.


Instruction:
Given the following Python 3 function, write the documentation
def elementTypeName(self):
        if self._array is None:
            return super(FieldRti, self).elementTypeName
        else:
            fieldName = self.nodeName
            return str(self._array.dtype.fields[fieldName][0])

Response: String representation of the element type.


Instruction:
Implement a Python 3 function for
returning a list with the dimension names of the underlying NCDF variable

Response:
def dimensionNames(self):
        """ Returns a list with the dimension names of the underlying NCDF variable
        """
        mainArrayDims = ['Dim{}'.format(dimNr) for dimNr in range(self._array.ndim)]
        nSubDims = len(self._subArrayShape)
        subArrayDims = ['SubDim{}'.format(dimNr) for dimNr in range(nSubDims)]
        return mainArrayDims + subArrayDims


Instruction:
Write a Python 3 function for
returning the value to indicate missing data.

Response:
def missingDataValue(self):
        """ Returns the value to indicate missing data.
        """
        value =  getMissingDataValue(self._array)
        fieldNames = self._array.dtype.names

        # If the missing value attibute is a list with the same length as the number of fields,
        # return the missing value for field that equals the self.nodeName.
        if hasattr(value, '__len__') and len(value) == len(fieldNames):
            idx = fieldNames.index(self.nodeName)
            return value[idx]
        else:
            return value


Instruction:
Here you have a function in Python 3, explain what it does
def elementTypeName(self):
        if self._array is None:
            return super(ArrayRti, self).elementTypeName
        else:
            dtype =  self._array.dtype
            return '<structured>' if dtype.names else str(dtype)

Response: String representation of the element type.


Instruction:
Write a Python 3 function for
fetching all the children of this variable.

Response:
def _fetchAllChildren(self):
        """ Fetches all fields that this variable contains.
            Only variables with a structured data type can have fields.
        """
        assert self.canFetchChildren(), "canFetchChildren must be True"

        childItems = []

        # Add fields in case of an array of structured type.
        if self._isStructured:
            for fieldName in self._array.dtype.names:
                childItem = FieldRti(self._array, nodeName=fieldName, fileName=self.fileName)
                childItem._iconColor = self.iconColor
                childItems.append(childItem)

        return childItems


Instruction:
Can you write a function in Python 3 where it
evaluates the function to result an array of resources and sets the internal array to the result of the function.

Response:
def _openResources(self):
        """ Evaluates the function to result an array
        """
        arr = self._fun()
        check_is_an_array(arr)
        self._array = arr


Instruction:
Create a Python 3 function for
adding a child item for each column

Response:
def _fetchAllChildren(self):
        """ Adds a child item for each column
        """
        childItems = []
        for nr, elem in enumerate(self._sequence):
            childItem = _createFromObject(elem, "elem-{}".format(nr), self.fileName)
            childItem._iconColor = self.iconColor
            childItems.append(childItem)
        return childItems


Instruction:
Write a Python 3 script for
adding a child item for each item

Response:
def _fetchAllChildren(self):
        """ Adds a child item for each item
        """
        childItems = []
        logger.debug("{!r} _fetchAllChildren {!r}".format(self, self.fileName))

        if self.hasChildren():
            for key, value in sorted(self._dictionary.items()):
                # TODO: pass the attributes to the children? (probably not)
                childItem = _createFromObject(value, str(key), self.fileName)
                childItem._iconColor = self.iconColor
                childItems.append(childItem)

        return childItems


Instruction:
Can you create a Python 3 function that
returns the string with debugging information about the current item.

Response:
def debugInfo(self):
        """ Returns the string with debugging information
        """
        return ("enabled = {}, min = {}, max = {}, step = {}, specVal = {}"
                .format(self.enabled, self.minValue, self.maxValue, self.stepSize, self.specialValueText))


Instruction:
Can you generate the documentation for the following Python 3 function
def createEditor(self, delegate, parent, option):
        return IntCtiEditor(self, delegate, parent=parent)

Response: Creates a IntCtiEditor object for the given delegate and parent.


Instruction:
Write a Python 3 function that can
call at clean up.

Response:
def finalize(self):
        """ Called at clean up. Is used to disconnect signals.
        """
        self.spinBox.valueChanged.disconnect(self.commitChangedValue)
        super(IntCtiEditor, self).finalize()


Instruction:
Write a Python 3 function that can
disconnect signals and disconnects the related objects.

Response:
def finalize(self):
        """ Is called before destruction (when closing).
            Can be used to clean-up resources.
        """
        logger.debug("Finalizing: {}".format(self))

        # Disconnect signals
        self.collector.sigContentsChanged.disconnect(self.collectorContentsChanged)
        self._configTreeModel.sigItemChanged.disconnect(self.configContentsChanged)
        self.sigInspectorChanged.disconnect(self.inspectorSelectionPane.updateFromInspectorRegItem)
        self.customContextMenuRequested.disconnect(self.showContextMenu)


Instruction:
Can you write a function in Python 3 where it
creates the UI widgets.

Response:
def __setupViews(self):
        """ Creates the UI widgets.
        """
        self._collector = Collector(self.windowNumber)
        self.configWidget = ConfigWidget(self._configTreeModel)
        self.repoWidget = RepoWidget(self.argosApplication.repo, self.collector)
        # self._configTreeModel.insertItem(self.repoWidget.repoTreeView.config) # No configurable items yet

        # Define a central widget that will be the parent of the inspector widget.
        # We don't set the inspector directly as the central widget to retain the size when the
        # inspector is changed.
        widget = QtWidgets.QWidget()
        layout = QtWidgets.QVBoxLayout(widget)
        layout.setContentsMargins(CENTRAL_MARGIN, CENTRAL_MARGIN, CENTRAL_MARGIN, CENTRAL_MARGIN)
        layout.setSpacing(CENTRAL_SPACING)
        self.setCentralWidget(widget)

        # Must be after setInspector since that already draws the inspector
        self.collector.sigContentsChanged.connect(self.collectorContentsChanged)
        self._configTreeModel.sigItemChanged.connect(self.configContentsChanged)


Instruction:
Can you generate a brief explanation for the following Python 3 code
def __setupMenus(self):
        if True:
            # Don't use self.menuBar(), on OS-X this is not shared across windows.
            # See: http://qt-project.org/doc/qt-4.8/qmenubar.html#details
            # And:http://qt-project.org/doc/qt-4.8/qmainwindow.html#menuBar
            menuBar = QtWidgets.QMenuBar() # Make a menu without parent.
            self.setMenuBar(menuBar)
        else:
            menuBar = self.menuBar()

        ### File Menu ###

        fileMenu = menuBar.addMenu("&File")

        fileMenu.addAction("&New Window", self.cloneWindow, QtGui.QKeySequence("Ctrl+N"))
        fileMenu.addAction("Close &Window", self.close, QtGui.QKeySequence.Close)

        fileMenu.addSeparator()

        action = fileMenu.addAction("Browse Directory...",
            lambda: self.openFiles(fileMode = QtWidgets.QFileDialog.Directory))
        action.setShortcut(QtGui.QKeySequence("Ctrl+B"))

        action = fileMenu.addAction("&Open Files...",
            lambda: self.openFiles(fileMode = QtWidgets.QFileDialog.ExistingFiles))
        action.setShortcut(QtGui.QKeySequence("Ctrl+O"))

        openAsMenu = fileMenu.addMenu("Open As")
        for rtiRegItem in self.argosApplication.rtiRegistry.items:
            #rtiRegItem.tryImportClass()
            def createTrigger():
                "Function to create a closure with the regItem"
                _rtiRegItem = rtiRegItem # keep reference in closure
                return lambda: self.openFiles(rtiRegItem=_rtiRegItem,
                                              fileMode = QtWidgets.QFileDialog.ExistingFiles,
                                              caption="Open {}".format(_rtiRegItem.name))

            action = QtWidgets.QAction("{}...".format(rtiRegItem.name), self,
                enabled=True, # Since this is only executed at start-up, it must be static
                #enabled=bool(rtiRegItem.successfullyImported), # TODO: make this work?
                triggered=createTrigger())
            openAsMenu.addAction(action)

        fileMenu.addSeparator()

        # for action in self.repoWidget.repoTreeView.topLevelItemActionGroup.actions():
        #     fileMenu.addAction(action)
        #
        # for action in self.repoWidget.repoTreeView.currentItemActionGroup.actions():
        #     fileMenu.addAction(action)

        fileMenu.addSeparator()
        fileMenu.addAction("E&xit", self.argosApplication.closeAllWindows, QtGui.QKeySequence.Quit)

        ### View Menu ###
        self.viewMenu = menuBar.addMenu("&View")
        action = self.viewMenu.addAction("Installed &Plugins...", self.execPluginsDialog)
        action.setShortcut(QtGui.QKeySequence("Ctrl+P"))
        self.viewMenu.addSeparator()

        ### Inspector Menu ###
        self.execInspectorDialogAction = QtWidgets.QAction("&Browse Inspectors...", self,
                                                           triggered=self.execInspectorDialog)
        self.execInspectorDialogAction.setShortcut(QtGui.QKeySequence("Ctrl+i"))

        self.inspectorActionGroup = self.__createInspectorActionGroup(self)
        self.inspectorMenu = menuBar.addMenu("Inspector")
        addInspectorActionsToMenu(self.inspectorMenu, self.execInspectorDialogAction,
                                  self.inspectorActionGroup)

        ### Window Menu ###
        self.windowMenu = menuBar.addMenu("&Window")

        # The action added to the menu in the repopulateWindowMenu method, which is called by
        # the ArgosApplication object every time a window is added or removed.
        self.activateWindowAction = QtWidgets.QAction("Window #{}".format(self.windowNumber),
                                                      self, triggered=self.activateAndRaise,
                                                      checkable=True)
        if self.windowNumber <= 9:
            self.activateWindowAction.setShortcut(QtGui.QKeySequence("Alt+{}"
                                                                     .format(self.windowNumber)))
        ### Help Menu ###
        menuBar.addSeparator()
        helpMenu = menuBar.addMenu("&Help")
        helpMenu.addAction('&About...', self.about)

        if DEBUGGING:
            helpMenu.addSeparator()
            helpMenu.addAction("&Test", self.myTest, "Alt+T")
            helpMenu.addAction("Add Test Data", self.addTestData, "Alt+A")

        ### Context menu ###

        # Note that the dock-widgets have a Qt.PreventContextMenu context menu policy.
        # Therefor the context menu is only shown in the center widget.
        self.setContextMenuPolicy(Qt.CustomContextMenu)
        self.customContextMenuRequested.connect(self.showContextMenu)

Response: Sets up the main menu.


Instruction:
Explain what the following Python 3 code does
def __createInspectorActionGroup(self, parent):
        actionGroup = QtWidgets.QActionGroup(parent)
        actionGroup.setExclusive(True)

        sortedItems = sorted(self.argosApplication.inspectorRegistry.items,
                             key=lambda item: item.identifier)
        shortCutNr = 1
        for item in sortedItems:
            logger.debug("item: {}".format(item.identifier))
            setAndDrawFn = partial(self.setAndDrawInspectorById, item.identifier)
            action = QtWidgets.QAction(item.name, self, triggered=setAndDrawFn, checkable=True)
            action.setData(item.identifier)
            if shortCutNr <= 9 and "debug" not in item.identifier: # TODO: make configurable by the user
                action.setShortcut(QtGui.QKeySequence("Ctrl+{}".format(shortCutNr)))
                shortCutNr += 1

            actionGroup.addAction(action)

        return actionGroup

Response: Creates an action group with set inspector actions for all installed inspector.


Instruction:
Can you generate the documentation for the following Python 3 function
def __setupDockWidgets(self):
        #self.dockWidget(self.currentInspectorPane, "Current Inspector", Qt.LeftDockWidgetArea)

        self.inspectorSelectionPane = InspectorSelectionPane(self.execInspectorDialogAction,
                                                             self.inspectorActionGroup)
        self.sigInspectorChanged.connect(self.inspectorSelectionPane.updateFromInspectorRegItem)
        self.dockWidget(self.inspectorSelectionPane, "Current Inspector",
                        area=Qt.LeftDockWidgetArea)

        self.dockWidget(self.repoWidget, "Data Repository", Qt.LeftDockWidgetArea)
        self.dockWidget(self.collector, "Data Collector", Qt.TopDockWidgetArea)
        # TODO: if the title == "Settings" it won't be added to the view menu.
        self.dockWidget(self.configWidget, "Application Settings", Qt.RightDockWidgetArea)

        self.viewMenu.addSeparator()

        propertiesPane = PropertiesPane(self.repoWidget.repoTreeView)
        self.dockDetailPane(propertiesPane, area=Qt.LeftDockWidgetArea)

        attributesPane = AttributesPane(self.repoWidget.repoTreeView)
        self.dockDetailPane(attributesPane, area=Qt.LeftDockWidgetArea)

        dimensionsPane = DimensionsPane(self.repoWidget.repoTreeView)
        self.dockDetailPane(dimensionsPane, area=Qt.LeftDockWidgetArea)

        # Add am extra separator on mac because OS-X adds an 'Enter Full Screen' item
        if sys.platform.startswith('darwin'):
            self.viewMenu.addSeparator()

Response: Sets up the dock widgets.


Instruction:
Given the following Python 3 function, write the documentation
def repopulateWinowMenu(self, actionGroup):
        for action in self.windowMenu.actions():
            self.windowMenu.removeAction(action)

        for action in actionGroup.actions():
            self.windowMenu.addAction(action)

Response: Re - creates the window menu with the actions of the actionGroup.


Instruction:
Can you generate the documentation for the following Python 3 function
def showContextMenu(self, pos):
        contextMenu = QtWidgets.QMenu()
        addInspectorActionsToMenu(contextMenu, self.execInspectorDialogAction,
                                  self.inspectorActionGroup)
        contextMenu.exec_(self.mapToGlobal(pos))

Response: Shows the context menu at the given position.


Instruction:
How would you code a function in Python 3 to
add a widget as a docked widget. Returns the added dockWidget

Response:
def dockWidget(self, widget, title, area):
        """ Adds a widget as a docked widget.
            Returns the added dockWidget
        """
        assert widget.parent() is None, "Widget already has a parent"

        dockWidget = QtWidgets.QDockWidget(title, parent=self)
        dockWidget.setObjectName("dock_" + string_to_identifier(title))
        dockWidget.setWidget(widget)

        # Prevent parent context menu (with e.g. 'set inspector" option) to be displayed.
        dockWidget.setContextMenuPolicy(Qt.PreventContextMenu)

        self.addDockWidget(area, dockWidget)
        self.viewMenu.addAction(dockWidget.toggleViewAction())
        return dockWidget


Instruction:
Can you tell what is the following Python 3 function doing
def dockDetailPane(self, detailPane, title=None, area=None):
        title = detailPane.classLabel() if title is None else title
        area = Qt.LeftDockWidgetArea if area is None else area
        dockWidget = self.dockWidget(detailPane, title, area)
        # TODO: undockDetailPane to disconnect
        dockWidget.visibilityChanged.connect(detailPane.dockVisibilityChanged)
        if len(self._detailDockWidgets) > 0:
            self.tabifyDockWidget(self._detailDockWidgets[-1], dockWidget)
        self._detailDockWidgets.append(dockWidget)
        return dockWidget

Response: Creates a dockWidget and adds it to the detailPane.


Instruction:
Create a Python 3 function to
update the window title frm the window number inspector etc Also updates the Window Menu

Response:
def updateWindowTitle(self):
        """ Updates the window title frm the window number, inspector, etc
            Also updates the Window Menu
        """
        self.setWindowTitle("{} #{} | {}-{}".format(self.inspectorName, self.windowNumber,
                                                    PROJECT_NAME, self.argosApplication.profile))
        #self.activateWindowAction.setText("{} window".format(self.inspectorName, self.windowNumber))
        self.activateWindowAction.setText("{} window".format(self.inspectorName))


Instruction:
Given the following Python 3 function, write the documentation
def execInspectorDialog(self):
        dialog = OpenInspectorDialog(self.argosApplication.inspectorRegistry, parent=self)
        dialog.setCurrentInspectorRegItem(self.inspectorRegItem)
        dialog.exec_()
        if dialog.result():
            inspectorRegItem = dialog.getCurrentInspectorRegItem()
            if inspectorRegItem is not None:
                self.getInspectorActionById(inspectorRegItem.identifier).trigger()

Response: Opens the inspector dialog box to change the current inspector.


Instruction:
Implement a function in Python 3 to
set the inspector and draw the contents Triggers the corresponding action

Response:
def getInspectorActionById(self, identifier):
        """ Sets the inspector and draw the contents
            Triggers the corresponding action so that it is checked in the menus.
        """
        for action in self.inspectorActionGroup.actions():
            if action.data() == identifier:
                return action
        raise KeyError("No action found with ID: {!r}".format(identifier))


Instruction:
Here you have a function in Python 3, explain what it does
def setAndDrawInspectorById(self, identifier):
        self.setInspectorById(identifier)

        # Show dialog box if import was unsuccessful.
        regItem = self.inspectorRegItem
        if regItem and not regItem.successfullyImported:
            msg = "Unable to import {} inspector.\n{}".format(regItem.identifier, regItem.exception)
            QtWidgets.QMessageBox.warning(self, "Warning", msg)
            logger.warn(msg)

        self.drawInspectorContents(reason=UpdateReason.INSPECTOR_CHANGED)

Response: Sets the inspector and draw the contents.


Instruction:
Create a Python 3 function for
setting the central inspector widget given an ID.

Response:
def setInspectorById(self, identifier):
        """ Sets the central inspector widget given a inspector ID.

            If identifier is None, the inspector will be unset. Otherwise it will lookup the
            inspector class in the registry. It will raise a KeyError if the ID is not found there.

            It will do an import of the inspector code if it's loaded for the first time. If the
            the inspector class cannot be imported a warning is logged and the inspector is unset.

            NOTE: does not draw the new inspector, this is the responsibility of the caller.
            Also, the corresponding action is not triggered.

            Emits the sigInspectorChanged(self.inspectorRegItem)
        """
        logger.info("Setting inspector: {}".format(identifier))

        # Use the identifier to find a registered inspector and set self.inspectorRegItem.
        # Then create an inspector object from it.

        oldInspectorRegItem = self.inspectorRegItem
        oldInspector = self.inspector

        if not identifier:
            inspector = None
            self._inspectorRegItem = None
        else:
            inspectorRegistry = self.argosApplication.inspectorRegistry
            inspectorRegItem = inspectorRegistry.getItemById(identifier)

            self._inspectorRegItem = inspectorRegItem
            if inspectorRegItem is None:
                inspector = None
            else:
                try:
                    inspector = inspectorRegItem.create(self.collector, tryImport=True)
                except ImportError as ex:
                    # Only log the error. No dialog box or user interaction here because this
                    # function may be called at startup.
                    logger.exception("Clearing inspector. Unable to create {!r} because {}"
                                     .format(inspectorRegItem.identifier, ex))
                    inspector = None
                    self.getInspectorActionById(identifier).setEnabled(False)

                    if DEBUGGING:
                        raise

        ######################
        # Set self.inspector #
        ######################

        check_class(inspector, AbstractInspector, allow_none=True)

        logger.debug("Disabling updates.")
        self.setUpdatesEnabled(False)
        try:
            centralLayout = self.centralWidget().layout()

            # Delete old inspector
            if oldInspector is None: # can be None at start-up
                oldConfigPosition = None # Last top level element in the config tree.
            else:
                self._updateNonDefaultsForInspector(oldInspectorRegItem, oldInspector)

                # Remove old inspector configuration from tree
                oldConfigPosition = oldInspector.config.childNumber()
                configPath = oldInspector.config.nodePath
                _, oldConfigIndex = self._configTreeModel.findItemAndIndexPath(configPath)[-1]
                self._configTreeModel.deleteItemAtIndex(oldConfigIndex)

                oldInspector.finalize() # TODO: before removing config
                centralLayout.removeWidget(oldInspector)
                oldInspector.deleteLater()

            # Set new inspector
            self._inspector = inspector

            # Update collector widgets and the config tree
            oldBlockState = self.collector.blockSignals(True)
            try:
                if self.inspector is None:
                    self.collector.clearAndSetComboBoxes([])
                else:
                    # Add and apply config values to the inspector
                    key = self.inspectorRegItem.identifier
                    nonDefaults = self._inspectorsNonDefaults.get(key, {})
                    logger.debug("Setting non defaults: {}".format(nonDefaults))
                    self.inspector.config.setValuesFromDict(nonDefaults)
                    self._configTreeModel.insertItem(self.inspector.config, oldConfigPosition)
                    self.configWidget.configTreeView.expandBranch()
                    self.collector.clearAndSetComboBoxes(self.inspector.axesNames())
                    centralLayout.addWidget(self.inspector)
            finally:
                self.collector.blockSignals(oldBlockState)
        finally:
            logger.debug("Enabling updates.")
            self.setUpdatesEnabled(True)

            self.updateWindowTitle()

            logger.debug("Emitting sigInspectorChanged({})".format(self.inspectorRegItem))
            self.sigInspectorChanged.emit(self.inspectorRegItem)


Instruction:
Here you have a function in Python 3, explain what it does
def _updateNonDefaultsForInspector(self, inspectorRegItem, inspector):
        if inspectorRegItem and inspector:
            key = inspectorRegItem.identifier
            logger.debug("_updateNonDefaultsForInspector: {} {}"
                         .format(key, type(inspector)))
            self._inspectorsNonDefaults[key] = inspector.config.getNonDefaultsDict()
        else:
            logger.debug("_updateNonDefaultsForInspector: no inspector")

Response: Update the non - default config values for the current inspector in a local dictionary.


Instruction:
Create a Python 3 function for
showing the plugins dialog with the registered plugins

Response:
def execPluginsDialog(self):
        """ Shows the plugins dialog with the registered plugins
        """
        pluginsDialog = PluginsDialog(parent=self,
                                inspectorRegistry=self.argosApplication.inspectorRegistry,
                                rtiRegistry=self.argosApplication.rtiRegistry)
        pluginsDialog.exec_()


Instruction:
Create a Python 3 function to
call when a config tree item has been changed.

Response:
def configContentsChanged(self, configTreeItem):
        """ Slot is called when an item has been changed by setData of the ConfigTreeModel.
            Will draw the window contents.
        """
        logger.debug("configContentsChanged: {}".format(configTreeItem))
        self.drawInspectorContents(reason=UpdateReason.CONFIG_CHANGED,
                                   origin=configTreeItem)


Instruction:
Implement a Python 3 function for
drawing all contents of this window s inspector.

Response:
def drawInspectorContents(self, reason, origin=None):
        """ Draws all contents of this window's inspector.
            The reason and origin parameters are passed on to the inspector's updateContents method.

            :param reason: string describing the reason for the redraw.
                Should preferably be one of the UpdateReason enumeration class, but new values may
                be used (which are then ignored by existing inspectors).
            :param origin: object with extra infor on the reason
        """
        logger.debug("")
        logger.debug("-------- Drawing inspector of window: {} --------".format(self.windowTitle()))
        if self.inspector:
            self.inspector.updateContents(reason=reason, initiator=origin)
        else:
            logger.debug("No inspector selected")
        logger.debug("Finished draw inspector.\n")


Instruction:
Create a Python 3 function for
letting the user select on or more files and opens it.

Response:
def openFiles(self, fileNames=None, rtiRegItem=None, caption=None, fileMode=None):
        """ Lets the user select on or more files and opens it.

            :param fileNames: If None an open-file dialog allows the user to select files,
                otherwise the files are opened directly.
            :param rtiRegItem: Open the files as this type of registered RTI. None=autodetect.
            :param caption: Optional caption for the file dialog.
            :param fileMode: is passed to the file dialog.
            :rtype fileMode: QtWidgets.QFileDialog.FileMode constant
        """
        if fileNames is None:
            dialog = QtWidgets.QFileDialog(self, caption=caption)

            if rtiRegItem is None:
                nameFilter = 'All files (*);;' # Default show all files.
                nameFilter += self.argosApplication.rtiRegistry.getFileDialogFilter()
            else:
                nameFilter = rtiRegItem.getFileDialogFilter()
                nameFilter += ';;All files (*)'
            dialog.setNameFilter(nameFilter)

            if fileMode:
                dialog.setFileMode(fileMode)

            if dialog.exec_() == QtWidgets.QFileDialog.Accepted:
                fileNames = dialog.selectedFiles()
            else:
                fileNames = []

        fileRootIndex = None
        for fileName in fileNames:
            rtiClass = rtiRegItem.getClass(tryImport=True) if rtiRegItem else None
            fileRootIndex = self.argosApplication.repo.loadFile(fileName, rtiClass=rtiClass)
            self.repoWidget.repoTreeView.setExpanded(fileRootIndex, True)

        # Select last opened file
        if fileRootIndex is not None:
            self.repoWidget.repoTreeView.setCurrentIndex(fileRootIndex)


Instruction:
Write a Python 3 function that can
try to select a repository tree item given a path.

Response:
def trySelectRtiByPath(self, path):
        """ Selects a repository tree item given a path, expanding nodes if along the way if needed.

            Returns (item, index) if the path was selected successfully, else a warning is logged
            and (None, None) is returned.
        """
        try:
            lastItem, lastIndex = self.repoWidget.repoTreeView.expandPath(path)
            self.repoWidget.repoTreeView.setCurrentIndex(lastIndex)
            return lastItem, lastIndex
        except Exception as ex:
            logger.warn("Unable to select {!r} because: {}".format(path, ex))
            if DEBUGGING:
                raise
            return None, None


Instruction:
Write a Python 3 function for
reading the persistent program settings and sets the current state of the header state.

Response:
def readViewSettings(self, settings=None): # TODO: rename to readProfile?
        """ Reads the persistent program settings

            :param settings: optional QSettings object which can have a group already opened.
            :returns: True if the header state was restored, otherwise returns False
        """
        if settings is None:
            settings = QtCore.QSettings()
        logger.debug("Reading settings from: {}".format(settings.group()))

        self.restoreGeometry(settings.value("geometry"))
        self.restoreState(settings.value("state"))

        self.repoWidget.repoTreeView.readViewSettings('repo_tree/header_state', settings)
        self.configWidget.configTreeView.readViewSettings('config_tree/header_state', settings)

        #self._configTreeModel.readModelSettings('config_model', settings)
        settings.beginGroup('cfg_inspectors')
        try:
            for key in settings.childKeys():
                json = settings.value(key)
                self._inspectorsNonDefaults[key] = ctiLoads(json)
        finally:
            settings.endGroup()

        identifier = settings.value("inspector", None)
        try:
            if identifier:
                self.setInspectorById(identifier)
        except KeyError as ex:
            logger.warn("No inspector with ID {!r}.: {}".format(identifier, ex))


Instruction:
Write a Python 3 script for
writing the view settings to the persistent store

Response:
def saveProfile(self, settings=None):
        """ Writes the view settings to the persistent store
        """
        self._updateNonDefaultsForInspector(self.inspectorRegItem, self.inspector)

        if settings is None:
            settings = QtCore.QSettings()
        logger.debug("Writing settings to: {}".format(settings.group()))

        settings.beginGroup('cfg_inspectors')
        try:
            for key, nonDefaults in self._inspectorsNonDefaults.items():
                if nonDefaults:
                    settings.setValue(key, ctiDumps(nonDefaults))
                    logger.debug("Writing non defaults for {}: {}".format(key, nonDefaults))
        finally:
            settings.endGroup()

        self.configWidget.configTreeView.saveProfile("config_tree/header_state", settings)
        self.repoWidget.repoTreeView.saveProfile("repo_tree/header_state", settings)

        settings.setValue("geometry", self.saveGeometry())
        settings.setValue("state", self.saveState())

        identifier = self.inspectorRegItem.identifier if self.inspectorRegItem else ''
        settings.setValue("inspector", identifier)


Instruction:
Write a Python 3 script to
create a new window with the same inspector as the current window.

Response:
def cloneWindow(self):
        """ Opens a new window with the same inspector as the current window.
        """
        # Save current window settings.
        settings = QtCore.QSettings()
        settings.beginGroup(self.argosApplication.windowGroupName(self.windowNumber))
        try:
            self.saveProfile(settings)

            # Create new window with the freshly baked settings of the current window.
            name = self.inspectorRegItem.fullName
            newWindow = self.argosApplication.addNewMainWindow(settings=settings,
                                                               inspectorFullName=name)
        finally:
            settings.endGroup()

        # Select the current item in the new window.
        currentItem, _currentIndex = self.repoWidget.repoTreeView.getCurrentItem()
        if currentItem:
            newWindow.trySelectRtiByPath(currentItem.nodePath)

        # Move the new window 24 pixels to the bottom right and raise it to the front.
        newGeomRect = newWindow.geometry()
        logger.debug("newGeomRect: x={}".format(newGeomRect.x()))
        newGeomRect.moveTo(newGeomRect.x() + 24, newGeomRect.y() + 24)

        newWindow.setGeometry(newGeomRect)
        logger.debug("newGeomRect: x={}".format(newGeomRect.x()))

        newWindow.raise_()


Instruction:
Write a Python 3 script for
activating and raises the window.

Response:
def activateAndRaise(self):
        """ Activates and raises the window.
        """
        logger.debug("Activate and raising window: {}".format(self.windowNumber))
        self.activateWindow()
        self.raise_()


Instruction:
How would you code a function in Python 3 to
detect the WindowActivate event and passes all events through to the super class.

Response:
def event(self, ev):
        """ Detects the WindowActivate event. Pass all event through to the super class.
        """
        if ev.type() == QtCore.QEvent.WindowActivate:
            logger.debug("Window activated: {}".format(self.windowNumber))
            self.activateWindowAction.setChecked(True)

        return super(MainWindow, self).event(ev);


Instruction:
Make a summary of the following Python 3 code
def closeEvent(self, event):
        logger.debug("closeEvent")
        self.argosApplication.saveSettingsIfNeeded()
        self.finalize()
        self.argosApplication.removeMainWindow(self)
        event.accept()
        logger.debug("closeEvent accepted")

Response: Called when the event is received from the application.


Instruction:
Create a Python 3 function for
showing the about message window.

Response:
def about(self):
        """ Shows the about message window.
        """
        aboutDialog = AboutDialog(parent=self)
        aboutDialog.show()
        aboutDialog.addDependencyInfo()


Instruction:
Can you generate the documentation for the following Python 3 function
def profileGroupName(self, profile=None):
        profile = profile if profile else self.profile
        profGroupName = '_debug_' if DEBUGGING else ''
        profGroupName += string_to_identifier(profile)
        return profGroupName

Response: Returns the name of the QSetting group for the given profile.


Instruction:
Write a Python 3 function that can
return the name of the QSetting group for this window in the current profile.

Response:
def windowGroupName(self, windowNumber, profile=None):
        """ Returns the name of the QSetting group for this window in the this profile.

            :param windowNumber: int
            :param profile: profile name. If None the current profile is used.
        """
        return "{}/window-{:02d}".format(self.profileGroupName(profile=profile), windowNumber)


Instruction:
How would you explain what the following Python 3 function does
def deleteProfile(self, profile):
        profGroupName = self.profileGroupName(profile)
        logger.debug("Resetting profile settings: {}".format(profGroupName))
        settings = QtCore.QSettings()
        settings.remove(profGroupName)

Response: Removes a profile from the persistent settings


Instruction:
Implement a Python 3 function for
returning a list of all profiles

Response:
def deleteAllProfiles(self):
        """ Returns a list of all profiles
        """
        settings = QtCore.QSettings()
        for profGroupName in QtCore.QSettings().childGroups():
            settings.remove(profGroupName)


Instruction:
Can you tell what is the following Python 3 function doing
def loadProfile(self, profile, inspectorFullName=None):
        settings = QtCore.QSettings()
        logger.info("Reading profile {!r} from: {}".format(profile, settings.fileName()))

        self._profile = profile
        profGroupName = self.profileGroupName(profile)

        # Instantiate windows from groups
        settings.beginGroup(profGroupName)
        try:
            for windowGroupName in settings.childGroups():
                if windowGroupName.startswith('window'):
                    settings.beginGroup(windowGroupName)
                    try:
                        self.addNewMainWindow(settings=settings)
                    finally:
                        settings.endGroup()
        finally:
            settings.endGroup()

        if inspectorFullName is not None:
            windows = [win for win in self._mainWindows
                       if win.inspectorFullName == inspectorFullName]
            if len(windows) == 0:
                logger.info("Creating window for inspector: {!r}".format(inspectorFullName))
                try:
                    win = self.addNewMainWindow(inspectorFullName=inspectorFullName)
                except KeyError:
                    logger.warn("No inspector found with ID: {}".format(inspectorFullName))
            else:
                for win in windows:
                    win.raise_()

        if len(self.mainWindows) == 0:
            logger.info("No open windows in profile (creating one).")
            self.addNewMainWindow(inspectorFullName=DEFAULT_INSPECTOR)

Response: Reads the persistent program settings for the current profile.


Instruction:
Explain what the following Python 3 code does
def saveProfile(self):
        if not self.profile:
            logger.warning("No profile defined (no settings saved)")
            return

        settings = QtCore.QSettings()
        logger.debug("Writing settings to: {}".format(settings.fileName()))

        profGroupName = self.profileGroupName()
        settings.remove(profGroupName) # start with a clean slate

        assert self.mainWindows, "no main windows found"
        for winNr, mainWindow in enumerate(self.mainWindows):
            settings.beginGroup(self.windowGroupName(winNr))
            try:
                mainWindow.saveProfile(settings)
            finally:
                settings.endGroup()

Response: Writes the current profile settings to the persistent store.


Instruction:
Implement a function in Python 3 to
save the persistent settings. Only saves the profile.

Response:
def saveSettings(self):
        """ Saves the persistent settings. Only saves the profile.
        """
        try:
            self.saveProfile()
        except Exception as ex:
            # Continue, even if saving the settings fails.
            logger.warn(ex)
            if DEBUGGING:
                raise
        finally:
            self._settingsSaved = True


Instruction:
Implement a Python 3 function for
loading files into the repository as tree items of class rtiClass.

Response:
def loadFiles(self, fileNames, rtiClass=None):
        """ Loads files into the repository as repo tree items of class rtiClass.
            Auto-detects using the extensions when rtiClass is None
        """
        for fileName in fileNames:
            self.repo.loadFile(fileName, rtiClass=rtiClass)


Instruction:
Explain what the following Python 3 code does
def addNewMainWindow(self, settings=None, inspectorFullName=None):
        mainWindow = MainWindow(self)
        self.mainWindows.append(mainWindow)

        self.windowActionGroup.addAction(mainWindow.activateWindowAction)
        self.repopulateAllWindowMenus()

        if settings:
            mainWindow.readViewSettings(settings)

        if inspectorFullName:
            inspectorId = nameToIdentifier(inspectorFullName)
            mainWindow.setInspectorById(inspectorId)

        if mainWindow.inspectorRegItem: # can be None at start
            inspectorId = mainWindow.inspectorRegItem.identifier
            mainWindow.getInspectorActionById(inspectorId).setChecked(True)
            logger.info("Created new window with inspector: {}"
                        .format(mainWindow.inspectorRegItem.fullName))
        else:
            logger.info("Created new window without inspector")

        mainWindow.drawInspectorContents(reason=UpdateReason.NEW_MAIN_WINDOW)
        mainWindow.show()

        if sys.platform.startswith('darwin'):
            # Calling raise before the QApplication.exec_ only shows the last window
            # that was added. Therefore we also call activeWindow. However, this may not
            # always be desirable. TODO: make optional?
            mainWindow.raise_()
            pass

        return mainWindow

Response: Creates and shows a new MainWindow.


Instruction:
Here you have a function in Python 3, explain what it does
def removeMainWindow(self, mainWindow):
        logger.debug("removeMainWindow called")

        self.windowActionGroup.removeAction(mainWindow.activateWindowAction)
        self.repopulateAllWindowMenus()

        self.mainWindows.remove(mainWindow)

Response: Removes the mainWindow from the list of windows.


Instruction:
Here you have a function in Python 3, explain what it does
def raiseAllWindows(self):
        logger.debug("raiseAllWindows called")
        for mainWindow in self.mainWindows:
            logger.debug("Raising {}".format(mainWindow._instanceNr))
            mainWindow.raise_()

Response: Raises all application windows.


Instruction:
Write a Python 3 script for
quitting the application (called when the last window is closed)

Response:
def quit(self):
        """ Quits the application (called when the last window is closed)
        """
        logger.debug("ArgosApplication.quit called")
        assert len(self.mainWindows) == 0, \
            "Bug: still {} windows present at application quit!".format(len(self.mainWindows))
        self.qApplication.quit()


Instruction:
Write a Python 3 script to
execute all main windows by starting the Qt main application and executing the main application.

Response:
def execute(self):
        """ Executes all main windows by starting the Qt main application
        """
        logger.info("Starting Argos event loop...")
        exitCode = self.qApplication.exec_()
        logger.info("Argos event loop finished with exit code: {}".format(exitCode))
        return exitCode


Instruction:
Can you tell what is the following Python 3 function doing
def _openResources(self):
        with Image.open(self._fileName) as image:
            self._array = np.asarray(image)
            self._bands = image.getbands()

            # Fill attributes. For now assume that the info item are not overridden by
            # the Image items.
            self._attributes = dict(image.info)
            self._attributes['Format'] = image.format
            self._attributes['Mode'] = image.mode
            self._attributes['Size'] = image.size
            self._attributes['Width'] = image.width
            self._attributes['Height'] = image.height

Response:
Uses open the underlying file
            to open the array and bands of the image.


Instruction:
Write a Python 3 script for
adding the bands as separate fields so they can be inspected easily.

Response:
def _fetchAllChildren(self):
        """ Adds the bands as separate fields so they can be inspected easily.
        """
        bands = self._bands
        if len(bands) != self._array.shape[-1]:
            logger.warn("No bands added, bands != last_dim_lenght ({} !: {})"
                        .format(len(bands), self._array.shape[-1]))
            return []

        childItems = []
        for bandNr, band in enumerate(bands):
            bandItem = PillowBandRti(self._array[..., bandNr],
                                     nodeName=band, fileName=self.fileName,
                                     iconColor=self.iconColor, attributes=self._attributes)
            childItems.append(bandItem)
        return childItems


Instruction:
How would you implement a function in Python 3 that
returns a list of dimension names for this PillowFileRti.

Response:
def dimensionNames(self):
        """ Returns ['Y', 'X', 'Band'].
            The underlying array is expected to be 3-dimensional. If this is not the case we fall
            back on the default dimension names ['Dim-0', 'Dim-1', ...]
        """
        if self._array is None:
            return []

        if self._array.ndim == 2:
            return ['Y', 'X']
        elif self._array.ndim == 3:
            return ['Y', 'X', 'Band']
        else:
            # Defensive programming: fall back on default names
            msg = "Expected 3D image. Got: {}".format(self._array.ndim)
            if DEBUGGING:
                raise ValueError(msg)
            logger.warn(msg)
            return super(PillowFileRti, self).dimensionNames


Instruction:
Given the following Python 3 function, write the documentation
def createEditor(self, delegate, parent, option):
        return UntypedCtiEditor(self, delegate, parent=parent)

Response: Creates an UntypedCtiEditor object.


Instruction:
How would you code a function in Python 3 to
return the width of the label text in pixels.

Response:
def labelTextWidth(label):
    """ Returns the width of label text of the label in pixels.

        IMPORTANT: does not work when the labels are styled using style sheets.

        Unfortunately it is possible to retrieve the settings (e.g. padding) that were set by the
        style sheet without parsing the style sheet as text.
    """
    # The Qt source shows that fontMetrics().size calls fontMetrics().boundingRect with
    # the TextLongestVariant included in the flags. TextLongestVariant is an internal flag
    # which is used to force selecting the longest string in a multi-length string.
    # See: http://stackoverflow.com/a/8638114/625350
    fontMetrics = label.fontMetrics()
    #contentsWidth = label.fontMetrics().boundingRect(label.text()).width()
    contentsWidth = fontMetrics.size(label.alignment(), label.text()).width()

    # If indent is negative, or if no indent has been set, the label computes the effective indent
    # as follows: If frameWidth() is 0, the effective indent becomes 0. If frameWidth() is greater
    # than 0, the effective indent becomes half the width of the "x" character of the widget's
    # current font().
    # See http://doc.qt.io/qt-4.8/qlabel.html#indent-prop
    if label.indent() < 0 and label.frameWidth(): # no indent, but we do have a frame
        indent = fontMetrics.width('x') / 2 - label.margin()
        indent *= 2 # the indent seems to be added to the other side as well
    else:
        indent = label.indent()

    result = contentsWidth + indent + 2 * label.frameWidth() + 2 * label.margin()

    if 1:
        #print ("contentsMargins: {}".format(label.getContentsMargins()))
        #print ("contentsRect: {}".format(label.contentsRect()))
        #print ("frameRect: {}".format(label.frameRect()))
        print ("contentsWidth: {}".format(contentsWidth))
        print ("lineWidth: {}".format(label.lineWidth()))
        print ("midLineWidth: {}".format(label.midLineWidth()))
        print ("frameWidth: {}".format(label.frameWidth()))
        print ("margin: {}".format(label.margin()))
        print ("indent: {}".format(label.indent()))
        print ("actual indent: {}".format(indent))
        print ("RESULT: {}".format(result))
        print ()
    return result


Instruction:
Write a Python 3 function that can
set the maximum width of the labels in the given list of objects.

Response:
def harmonizeLabelsTextWidth(labels, width=None):
    """ Sets the the maximum width of the labels
        If width is None, the maximum width is calculated using labelsMaxTextWidth()
    """
    if width is None:
        width = labelsMaxTextWidth(labels)

    for label in labels:
        #label.setFixedWidth(width)
        label.setMinimumWidth(width)


Instruction:
Can you tell what is the following Python 3 function doing
def jsonAsCti(dct):
    if '_class_'in dct:
        full_class_name = dct['_class_'] # TODO: how to handle the full_class_name?
        cls = import_symbol(full_class_name)
        return cls.createFromJsonDict(dct)
    else:
        return dct

Response: Returns a CTI given a dictionary of attributes.


Instruction:
Given the following Python 3 function, write the documentation
def enableBranch(self, enabled):
        self.enabled = enabled
        for child in self.childItems:
            child.enableBranch(enabled)

Response: Sets the enabled member to True or False for a node and all its children.


Instruction:
Can you generate a brief explanation for the following Python 3 code
def resetToDefault(self, resetChildren=True):
        self.data = self.defaultData
        if resetChildren:
            for child in self.childItems:
                child.resetToDefault(resetChildren=True)

Response: Resets the data to the default data.


Instruction:
Implement a function in Python 3 to
refresh the configuration tree from the target.

Response:
def refreshFromTarget(self, level=0):
        """ Refreshes the configuration tree from the target it monitors (if present).
            Recursively call _refreshNodeFromTarget for itself and all children. Subclasses should
            typically override _refreshNodeFromTarget instead of this function.
            During updateTarget's execution refreshFromTarget is blocked to avoid loops.
        """
        if self.getRefreshBlocked():
            logger.debug("_refreshNodeFromTarget blocked")
            return

        if False and level == 0:
            logger.debug("refreshFromTarget: {}".format(self.nodePath))

        self._refreshNodeFromTarget()
        for child in self.childItems:
            child.refreshFromTarget(level=level + 1)


Instruction:
Can you generate the documentation for the following Python 3 function
def updateTarget(self, level=0):
        #if level == 0:
        #    logger.debug("updateTarget: {}".format(self.nodePath))

        self._updateTargetFromNode()
        for child in self.childItems:
            child.updateTarget(level = level + 1)

Response: Applies the configuration to the target it monitors ( if present.


Instruction:
How would you explain what the following Python 3 function does
def _nodeGetNonDefaultsDict(self):
        dct = {}
        isEditable = bool(int(self.valueColumnItemFlags) and Qt.ItemIsEditable)
        if (self.data != self.defaultData and self.enabled and isEditable):
            dct['data'] = self.data
        return dct

Response: Returns this nodes values as a dictionary to be used for persistence.


Instruction:
Can you tell what is the following Python 3 function doing
def getNonDefaultsDict(self):
        dct = self._nodeGetNonDefaultsDict()

        childList = []
        for childCti in self.childItems:
            childDct = childCti.getNonDefaultsDict()
            if childDct:
                childList.append(childDct)
        if childList:
            dct['childItems'] = childList

        if dct:
            dct['nodeName'] = self.nodeName

        return dct

Response: Recursively retrieves values as a dictionary to be used for persistence.


Instruction:
Can you generate a brief explanation for the following Python 3 code
def setValuesFromDict(self, dct):
        if 'nodeName' not in dct:
            return

        nodeName = dct['nodeName']
        if nodeName != self.nodeName:
            msg = "nodeName mismatch: expected {!r}, got {!r}".format(self.nodeName, nodeName)
            if DEBUGGING:
                raise ValueError(msg)
            else:
                logger.warn(msg)
                return

        self._nodeSetValuesFromDict(dct)

        for childDct in dct.get('childItems', []):
            key = childDct['nodeName']
            try:
                childCti = self.childByNodeName(key)
            except IndexError as _ex:
                logger.warn("Unable to set values for: {}".format(key))
            else:
                childCti.setValuesFromDict(childDct)

Response: Recursively sets values for this node and all its descendants.


Instruction:
Implement a function in Python 3 to
call at cleanup when the editor is closed.

Response:
def finalize(self):
        """ Called at clean up, when the editor is closed. Can be used to disconnect signals.
            This is often called after the client (e.g. the inspector) is updated. If you want to
            take action before the update, override prepareCommit instead.
            Be sure to call the finalize of the super class if you override this function.
        """
        for subEditor in self._subEditors:
            self.removeSubEditor(subEditor)

        self.cti.model.sigItemChanged.disconnect(self.modelItemChanged)
        self.resetButton.clicked.disconnect(self.resetEditorValue)
        self.cti = None # just to make sure it's not used again.
        self.delegate = None


Instruction:
How would you explain what the following Python 3 function does
def addSubEditor(self, subEditor, isFocusProxy=False):
        self.hBoxLayout.insertWidget(len(self._subEditors), subEditor)
        self._subEditors.append(subEditor)

        subEditor.installEventFilter(self)
        subEditor.setFocusPolicy(Qt.StrongFocus)

        if isFocusProxy:
            self.setFocusProxy(subEditor)

        return subEditor

Response: Adds a sub editor to the layout at the right but before the reset button.


Instruction:
Implement a function in Python 3 to
remove the subEditor from the layout and removes the event filter.

Response:
def removeSubEditor(self, subEditor):
        """ Removes the subEditor from the layout and removes the event filter.
        """
        if subEditor is self.focusProxy():
            self.setFocusProxy(None)

        subEditor.removeEventFilter(self)
        self._subEditors.remove(subEditor)
        self.hBoxLayout.removeWidget(subEditor)


Instruction:
How would you explain what the following Python 3 function does
def eventFilter(self, watchedObject, event):
        if event.type() == QtCore.QEvent.KeyPress:
            key = event.key()
            if key in (Qt.Key_Tab, Qt.Key_Backtab):
                self.commitAndClose()
                return True
            else:
                return False

        return super(AbstractCtiEditor, self).eventFilter(watchedObject, event)

Response: Calls commitAndClose when tab and back - tab are pressed.


Instruction:
Given the following Python 3 function, write the documentation
def modelItemChanged(self, cti):
        if cti is not self.cti:
            logger.debug("Another config tree item has changed: {}. Closing editor for {}"
                         .format(cti, self.cti))
            self.delegate.closeEditor.emit(self, QtWidgets.QAbstractItemDelegate.NoHint) # CLOSES SELF!
        else:
            logger.debug("Cti of this editor has changed: {}".format(cti))

Response: Called when the model item of the config tree item has changed.


Instruction:
Can you write a function in Python 3 where it
commits the data of the sub editor and closes the current ctiEditor.

Response:
def commitAndClose(self):
        """ Commits the data of the sub editor and instructs the delegate to close this ctiEditor.

            The delegate will emit the closeEditor signal which is connected to the closeEditor
            method of the ConfigTreeView class. This, in turn will, call the finalize method of
            this object so that signals can be disconnected and resources can be freed. This is
            complicated but I don't see a simpler solution.
        """
        if self.delegate:
            self.delegate.commitData.emit(self)
            self.delegate.closeEditor.emit(self, QtWidgets.QAbstractItemDelegate.NoHint) # CLOSES SELF!
        else:
            # QAbstractItemView.closeEditor is sometimes called directly, without the
            # QAbstractItemDelegate.closeEditor signal begin emitted, e.g when the currentItem
            # changes. Therefore the commitAndClose method can be called twice, if we call it
            # explicitly as well (e.g. in FontCtiEditor.execFontDialog(). We guard against this.
            logger.debug("AbstractCtiEditor.commitAndClose: editor already closed (ignored).")


Instruction:
Can you tell what is the following Python 3 function doing
def resetEditorValue(self, checked=False):
        # Block all signals to prevent duplicate inspector updates.
        # No need to restore, the editors will be deleted after the reset.
        for subEditor in self._subEditors:
            subEditor.blockSignals(True)

        self.cti.resetToDefault(resetChildren=True)
        # This will commit the children as well.
        self.setData(self.cti.defaultData)
        self.commitAndClose()

Response: Resets the editor to the default value.


Instruction:
Can you generate a brief explanation for the following Python 3 code
def setError(self, msg=None, title=None):
        if msg is not None:
            self.messageLabel.setText(msg)

        if title is not None:
            self.titleLabel.setText(title)

Response: Shows and error message


Instruction:
Can you generate the documentation for the following Python 3 function
def resizeAllSections(header, sectionSize):
    for idx in range(header.length()):
        header.resizeSection(idx, sectionSize)

Response: Sets all sections of a header to the same size.


Instruction:
How would you explain what the following Python 3 function does
def makeReplacementField(formatSpec, altFormatSpec='', testValue=None):
    check_is_a_string(formatSpec)
    check_is_a_string(altFormatSpec)
    fmt = altFormatSpec if not formatSpec else formatSpec

    if is_quoted(fmt):
        fmt = fmt[1:-1] # remove quotes
    else:
        if fmt and ':' not in fmt and '!' not in fmt:
            fmt = ':' + fmt
        fmt = '{' + fmt + '}'

    # Test resulting replacement field
    if testValue is not None:
        try:
            _dummy = fmt.format(testValue)
        except Exception:
            msg = ("Format specifier failed: replacement-field={!r}, test-value={!r}"
                   .format(fmt, testValue))
            logger.error(msg)
            raise ValueError(msg)

    logger.debug("Resulting replacement field: {!r}".format(fmt))
    return fmt

Response: Creates a replacement field for the current locale.


Instruction:
Given the following Python 3 function, write the documentation
def _refreshNodeFromTarget(self):
        tableModel = self.tableInspector.model

        # Disable row height and column with settings for large headers (too slow otherwise)
        if tableModel.rowCount() >= RESET_HEADERS_AT_SIZE:
            self.autoRowHeightCti.data = False
            self.model.emitDataChanged(self.autoRowHeightCti)
            self.autoRowHeightCti.enable = False
        else:
            self.autoRowHeightCti.enable = True

        if tableModel.columnCount() >= RESET_HEADERS_AT_SIZE:
            self.autoColWidthCti.data  = False
            self.model.emitDataChanged(self.autoColWidthCti)
            self.autoColWidthCti.enable = False
        else:
            self.autoColWidthCti.enable = True

Response: Refreshes the TableInspectorCti from the TableInspector target it monitors.


Instruction:
Implement a Python 3 function for
drawing the contents of the collected repo tree item.

Response:
def _drawContents(self, reason=None, initiator=None):
        """ Draws the table contents from the sliced array of the collected repo tree item.

            See AbstractInspector.updateContents for the reason and initiator description.
        """
        logger.debug("TableInspector._drawContents: {}".format(self))

        oldTableIndex = self.tableView.currentIndex()
        if oldTableIndex.isValid():
            selectionWasValid = True # Defensive programming, keep old value just in case
            oldRow = oldTableIndex.row()
            oldCol = oldTableIndex.column()
        else:
            selectionWasValid = False
            oldRow = 0
            oldCol = 0

        self.model.updateState(self.collector.getSlicedArray(),
                               self.collector.rtiInfo,
                               self.configValue('separate fields'))

        self.model.encoding = self.config.encodingCti.configValue
        self.model.horAlignment = self.config.horAlignCti.configValue
        self.model.verAlignment = self.config.verAlignCti.configValue
        self.model.dataColor = self.config.dataColorCti.configValue
        self.model.missingColor = self.config.missingColorCti.configValue

        self.model.strFormat   = makeReplacementField(self.config.strFormatCti.configValue,
                                                      testValue='my_string')
        self.model.intFormat   = makeReplacementField(self.config.intFormatCti.configValue,
                                                      testValue=0)
        self.model.numFormat   = makeReplacementField(self.config.numFormatCti.configValue,
                                                      testValue=0.0)
        self.model.otherFormat = makeReplacementField(self.config.otherFormatCti.configValue,
                                                      testValue=None)
        self.model.maskFormat  = makeReplacementField(self.config.maskFormatCti.configValue,
                                                      testValue=None)

        scrollMode = self.configValue("scroll")
        self.tableView.setHorizontalScrollMode(scrollMode)
        self.tableView.setVerticalScrollMode(scrollMode)
        self.tableView.setWordWrap(self.configValue('word wrap'))

        # Update the model font from the font config item (will call self.setFont)
        self.config.updateTarget()

        verHeader = self.tableView.verticalHeader()
        if (self.config.autoRowHeightCti.configValue
            and self.model.rowCount() < RESET_HEADERS_AT_SIZE):

            numCells = self.model.rowCount() * self.model.columnCount()
            if numCells <= OPTIMIZE_RESIZE_AT_SIZE:
                logger.debug("Setting vertical resize mode to ResizeToContents")
                verHeader.setSectionResizeMode(QtWidgets.QHeaderView.ResizeToContents)
            else:
                # ResizeToContents can be very slow because it gets all rows.
                # Work around: resize only first row and columns and apply this to all rows/cols
                # TODO: perhaps use SizeHintRole?
                logger.warning("Performance work around: for tables with more than 1000 cells " +
                               "only the current row is resized and the others use that size.")
                verHeader.setSectionResizeMode(QtWidgets.QHeaderView.Interactive)
                self.tableView.resizeRowToContents(oldRow)
                resizeAllSections(verHeader, self.tableView.rowHeight(oldRow))
        else:
            logger.debug("Setting vertical resize mode to Interactive and reset header")
            verHeader.setSectionResizeMode(QtWidgets.QHeaderView.Interactive)
            verHeader.setDefaultSectionSize(self.config.defaultRowHeightCti.configValue)
            verHeader.reset()

        horHeader = self.tableView.horizontalHeader()
        if (self.config.autoColWidthCti.configValue
            and self.model.columnCount() < RESET_HEADERS_AT_SIZE):

            numCells = self.model.rowCount() * self.model.columnCount()
            if numCells <= OPTIMIZE_RESIZE_AT_SIZE:
                logger.debug("setting horizontal resize mode to ResizeToContents")
                horHeader.setSectionResizeMode(QtWidgets.QHeaderView.ResizeToContents)
            else:
                # ResizeToContents can be very slow because it gets all rows.
                # Work around: resize only first row and columns and apply this to all rows/cols
                # TODO: perhaps use SizeHintRole?
                logger.warning("Performance work around: for tables with more than 1000 cells " +
                               "only the current column is resized and the others use that size.")
                horHeader.setSectionResizeMode(QtWidgets.QHeaderView.Interactive)
                self.tableView.resizeColumnToContents(oldCol)
                resizeAllSections(horHeader, self.tableView.columnWidth(oldCol))
        else:
            logger.debug("Setting horizontal resize mode to Interactive and reset header")
            horHeader.setSectionResizeMode(QtWidgets.QHeaderView.Interactive)
            resizeAllSections(horHeader, self.config.defaultColWidthCti.configValue)
            horHeader.reset()

        # Restore selection after select
        if selectionWasValid:
            newIndex = self.model.index(oldRow, oldCol)
            if newIndex.isValid():
                logger.debug("Restoring selection: row={}, col={}".format(oldRow, oldCol))
                self.tableView.setCurrentIndex(newIndex)
            else:
                logger.debug("Can't restore selection")


Instruction:
Can you write a function in Python 3 where it
updates the state of the record in the table.

Response:
def updateState(self, slicedArray, rtiInfo, separateFields):
        """ Sets the slicedArray and rtiInfo and other members. This will reset the model.

            Will be called from the tableInspector._drawContents.
        """
        self.beginResetModel()
        try:
            # The sliced array can be a masked array or a (regular) numpy array.
            # The table works fine with masked arrays, no need to replace the masked values.
            self._slicedArray = slicedArray
            if slicedArray is None:
                self._nRows = 0
                self._nCols = 0
                self._fieldNames = []
            else:
                self._nRows, self._nCols = self._slicedArray.shape
                if self._slicedArray.data.dtype.names:
                    self._fieldNames = self._slicedArray.data.dtype.names
                else:
                    self._fieldNames = []

            self._rtiInfo = rtiInfo
            self._separateFields = separateFields

            # Don't put numbers in the header if the record is of structured type, fields are
            # placed in separate cells and the fake dimension is selected (combo index 0)
            if self._separateFields and self._fieldNames:

                if self._rtiInfo['x-dim'] == FAKE_DIM_NAME:
                    self._separateFieldOrientation = Qt.Horizontal
                    self._numbersInHeader = False
                elif self._rtiInfo['y-dim'] == FAKE_DIM_NAME:
                    self._separateFieldOrientation = Qt.Vertical
                    self._numbersInHeader = False
                else:
                    self._separateFieldOrientation = Qt.Horizontal
                    self._numbersInHeader = True
            else:
                self._separateFieldOrientation = None
                self._numbersInHeader = True

        finally:
            self.endResetModel()


Instruction:
Here you have a function in Python 3, explain what it does
def _cellValue(self, index):
        row = index.row()
        col = index.column()
        if (row < 0 or row >= self.rowCount() or col < 0 or col >= self.columnCount()):
            return None

        # The check above should have returned None if the sliced array is None
        assert self._slicedArray is not None, "Sanity check failed."

        nFields = len(self._fieldNames)

        data = self._slicedArray.data
        if self._separateFieldOrientation == Qt.Horizontal:
            dataValue = data[row, col // nFields][self._fieldNames[col % nFields]]
        elif self._separateFieldOrientation == Qt.Vertical:
            dataValue = data[row // nFields, col][self._fieldNames[row % nFields]]
        else:
            dataValue = data[row, col]

        return dataValue

Response: Returns the data value of the cell at the given index.


Instruction:
Write a Python 3 function for
returning the data mask of the cell at the given index.

Response:
def _cellMask(self, index):
        """ Returns the data mask of the cell at the index (without any string conversion)
        """
        row = index.row()
        col = index.column()
        if (row < 0 or row >= self.rowCount() or col < 0 or col >= self.columnCount()):
            return None

        # The check above should have returned None if the sliced array is None
        assert self._slicedArray is not None, "Sanity check failed."

        nFields = len(self._fieldNames)
        mask = self._slicedArray.mask
        if is_an_array(mask):
            if self._separateFieldOrientation == Qt.Horizontal:
                maskValue = mask[row, col // nFields][self._fieldNames[col % nFields]]
            elif self._separateFieldOrientation == Qt.Vertical:
                maskValue = mask[row // nFields, col][self._fieldNames[row % nFields]]
            else:
                maskValue = mask[row, col]
        else:
            maskValue = mask

        # Here maskValue can still be a list in case of structured arrays. It can even still be
        # a numpy array in case of a structured array with sub arrays as fields
        if is_an_array(maskValue):
            allMasked = np.all(maskValue)
        else:
            try:
                allMasked = all(maskValue)
            except TypeError as ex:
                allMasked = bool(maskValue)

        return allMasked


Instruction:
Explain what the following Python 3 code does
def data(self, index, role = Qt.DisplayRole):
        try:
            if role == Qt.DisplayRole:
                return to_string(self._cellValue(index), masked=self._cellMask(index),
                                 decode_bytes=self.encoding, maskFormat=self.maskFormat,
                                 strFormat=self.strFormat, intFormat=self.intFormat,
                                 numFormat=self.numFormat, otherFormat=self.otherFormat)

            elif role == Qt.FontRole:
                #assert self._font, "Font undefined"
                return self._font

            elif role == Qt.TextColorRole:
                masked = self._cellMask(index)
                if not is_an_array(masked) and masked:
                    return self.missingColor
                else:
                    return self.dataColor

            elif role == Qt.TextAlignmentRole:
                if self.horAlignment == ALIGN_SMART:
                    cellContainsNumber = isinstance(self._cellValue(index), numbers.Number)
                    horAlign = Qt.AlignRight if cellContainsNumber else Qt.AlignLeft
                    return horAlign | self.verAlignment
                else:
                    return self.horAlignment | self.verAlignment

            else:
                return None
        except Exception as ex:
            logger.error("Slot is not exception-safe.")
            logger.exception(ex)
            if DEBUGGING:
                raise

Response: Returns the data at an index for a certain role


Instruction:
Can you implement a function in Python 3 that
returns the header data for a given section and orientation.

Response:
def headerData(self, section, orientation, role):
        """ Returns the header for a section (row or column depending on orientation).
            Reimplemented from QAbstractTableModel to make the headers start at 0.
        """
        if role == Qt.DisplayRole:
            if self._separateFieldOrientation == orientation:

                nFields = len(self._fieldNames)
                varNr = section // nFields
                fieldNr = section % nFields
                header = str(varNr) + ' : ' if self._numbersInHeader else ''
                header += self._fieldNames[fieldNr]
                return header
            else:
                return str(section)
        else:
            return None


Instruction:
How would you explain what the following Python 3 function does
def rowCount(self, parent=None):
        if self._separateFieldOrientation == Qt.Vertical:
            return self._nRows * len(self._fieldNames)
        else:
            return self._nRows

Response: Returns the number of rows in the sliced array.


Instruction:
Make a summary of the following Python 3 code
def columnCount(self, parent=None):
        if self._separateFieldOrientation == Qt.Horizontal:
            return self._nCols * len(self._fieldNames)
        else:
            return self._nCols

Response: Returns the number of columns in the sliced array.


Instruction:
Explain what the following Python 3 code does
def setFont(self, font):
        check_class(font, QtGui.QFont, allow_none=True)
        self._font = font

Response:
Sets the font that will be returned when data is called with the Qt. FontRole.
            Can be a QFont or None