INSTRUCTION stringlengths 1 8.43k | RESPONSE stringlengths 75 104k |
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construct { parent: [ children ] } dict from { child: parent } keys are the nodes in the tree and values are the lists of children of that node in the tree. reverse_tree [ None ] is the root node >>> tree = bintree ( range ( 7 )) >>> reverse_bintree ( tree ) { None: 0 0: [ 1 4 ] 4: [ 5 6 ] 1: [ 2 3 ] } | def reverse_bintree(parents):
"""construct {parent:[children]} dict from {child:parent}
keys are the nodes in the tree, and values are the lists of children
of that node in the tree.
reverse_tree[None] is the root node
>>> tree = bintree(range(7))
>>> reverse_bintree(tree)
{No... |
get depth of an element in the tree | def depth(n, tree):
"""get depth of an element in the tree"""
d = 0
parent = tree[n]
while parent is not None:
d += 1
parent = tree[parent]
return d |
print a binary tree | def print_bintree(tree, indent=' '):
"""print a binary tree"""
for n in sorted(tree.keys()):
print "%s%s" % (indent * depth(n,tree), n) |
accept either IP address or dns name and return IP | def disambiguate_dns_url(url, location):
"""accept either IP address or dns name, and return IP"""
if not ip_pat.match(location):
location = socket.gethostbyname(location)
return disambiguate_url(url, location) |
connect to peers. peers will be a dict of 4 - tuples keyed by name. { peer: ( ident addr pub_addr location ) } where peer is the name ident is the XREP identity addr pub_addr are the | def connect(self, peers, btree, pub_url, root_id=0):
"""connect to peers. `peers` will be a dict of 4-tuples, keyed by name.
{peer : (ident, addr, pub_addr, location)}
where peer is the name, ident is the XREP identity, addr,pub_addr are the
"""
# count the number of ch... |
parallel reduce on binary tree if flat: value is an entry in the sequence else: value is a list of entries in the sequence if all: broadcast final result to all nodes else: only root gets final result | def reduce(self, f, value, flat=True, all=False):
"""parallel reduce on binary tree
if flat:
value is an entry in the sequence
else:
value is a list of entries in the sequence
if all:
broadcast final result to all nodes
else:
... |
parallel reduce followed by broadcast of the result | def allreduce(self, f, value, flat=True):
"""parallel reduce followed by broadcast of the result"""
return self.reduce(f, value, flat=flat, all=True) |
construct | def init_hub(self):
"""construct"""
client_iface = "%s://%s:" % (self.client_transport, self.client_ip) + "%i"
engine_iface = "%s://%s:" % (self.engine_transport, self.engine_ip) + "%i"
ctx = self.context
loop = self.loop
# Registrar socket
q = ZMQStream(ctx.soc... |
turn any valid targets argument into a list of integer ids | def _validate_targets(self, targets):
"""turn any valid targets argument into a list of integer ids"""
if targets is None:
# default to all
return self.ids
if isinstance(targets, (int,str,unicode)):
# only one target specified
targets = [targets]
... |
all ME and Task queue messages come through here as well as IOPub traffic. | def dispatch_monitor_traffic(self, msg):
"""all ME and Task queue messages come through here, as well as
IOPub traffic."""
self.log.debug("monitor traffic: %r", msg[0])
switch = msg[0]
try:
idents, msg = self.session.feed_identities(msg[1:])
except ValueError:... |
Route registration requests and queries from clients. | def dispatch_query(self, msg):
"""Route registration requests and queries from clients."""
try:
idents, msg = self.session.feed_identities(msg)
except ValueError:
idents = []
if not idents:
self.log.error("Bad Query Message: %r", msg)
retur... |
handler to attach to heartbeater. Called when a new heart starts to beat. Triggers completion of registration. | def handle_new_heart(self, heart):
"""handler to attach to heartbeater.
Called when a new heart starts to beat.
Triggers completion of registration."""
self.log.debug("heartbeat::handle_new_heart(%r)", heart)
if heart not in self.incoming_registrations:
self.log.info(... |
handler to attach to heartbeater. called when a previously registered heart fails to respond to beat request. triggers unregistration | def handle_heart_failure(self, heart):
"""handler to attach to heartbeater.
called when a previously registered heart fails to respond to beat request.
triggers unregistration"""
self.log.debug("heartbeat::handle_heart_failure(%r)", heart)
eid = self.hearts.get(heart, None)
... |
Save the submission of a task. | def save_task_request(self, idents, msg):
"""Save the submission of a task."""
client_id = idents[0]
try:
msg = self.session.unserialize(msg)
except Exception:
self.log.error("task::client %r sent invalid task message: %r",
client_id, msg, exc... |
save the result of a completed task. | def save_task_result(self, idents, msg):
"""save the result of a completed task."""
client_id = idents[0]
try:
msg = self.session.unserialize(msg)
except Exception:
self.log.error("task::invalid task result message send to %r: %r",
client_id, m... |
save an iopub message into the db | def save_iopub_message(self, topics, msg):
"""save an iopub message into the db"""
# print (topics)
try:
msg = self.session.unserialize(msg, content=True)
except Exception:
self.log.error("iopub::invalid IOPub message", exc_info=True)
return
p... |
Reply with connection addresses for clients. | def connection_request(self, client_id, msg):
"""Reply with connection addresses for clients."""
self.log.info("client::client %r connected", client_id)
content = dict(status='ok')
content.update(self.client_info)
jsonable = {}
for k,v in self.keytable.iteritems():
... |
Register a new engine. | def register_engine(self, reg, msg):
"""Register a new engine."""
content = msg['content']
try:
queue = cast_bytes(content['queue'])
except KeyError:
self.log.error("registration::queue not specified", exc_info=True)
return
heart = content.get(... |
Unregister an engine that explicitly requested to leave. | def unregister_engine(self, ident, msg):
"""Unregister an engine that explicitly requested to leave."""
try:
eid = msg['content']['id']
except:
self.log.error("registration::bad engine id for unregistration: %r", ident, exc_info=True)
return
self.log.i... |
Handle messages known to be on an engine when the engine unregisters. | def _handle_stranded_msgs(self, eid, uuid):
"""Handle messages known to be on an engine when the engine unregisters.
It is possible that this will fire prematurely - that is, an engine will
go down after completing a result, and the client will be notified
that the result failed and lat... |
Second half of engine registration called after our HeartMonitor has received a beat from the Engine s Heart. | def finish_registration(self, heart):
"""Second half of engine registration, called after our HeartMonitor
has received a beat from the Engine's Heart."""
try:
(eid,queue,reg,purge) = self.incoming_registrations.pop(heart)
except KeyError:
self.log.error("registra... |
handle shutdown request. | def shutdown_request(self, client_id, msg):
"""handle shutdown request."""
self.session.send(self.query, 'shutdown_reply', content={'status': 'ok'}, ident=client_id)
# also notify other clients of shutdown
self.session.send(self.notifier, 'shutdown_notice', content={'status': 'ok'})
... |
Return the Queue status of one or more targets. if verbose: return the msg_ids else: return len of each type. keys: queue ( pending MUX jobs ) tasks ( pending Task jobs ) completed ( finished jobs from both queues ) | def queue_status(self, client_id, msg):
"""Return the Queue status of one or more targets.
if verbose: return the msg_ids
else: return len of each type.
keys: queue (pending MUX jobs)
tasks (pending Task jobs)
completed (finished jobs from both queues)"""
... |
Purge results from memory. This method is more valuable before we move to a DB based message storage mechanism. | def purge_results(self, client_id, msg):
"""Purge results from memory. This method is more valuable before we move
to a DB based message storage mechanism."""
content = msg['content']
self.log.info("Dropping records with %s", content)
msg_ids = content.get('msg_ids', [])
... |
Resubmit one or more tasks. | def resubmit_task(self, client_id, msg):
"""Resubmit one or more tasks."""
def finish(reply):
self.session.send(self.query, 'resubmit_reply', content=reply, ident=client_id)
content = msg['content']
msg_ids = content['msg_ids']
reply = dict(status='ok')
try:
... |
decompose a TaskRecord dict into subsection of reply for get_result | def _extract_record(self, rec):
"""decompose a TaskRecord dict into subsection of reply for get_result"""
io_dict = {}
for key in ('pyin', 'pyout', 'pyerr', 'stdout', 'stderr'):
io_dict[key] = rec[key]
content = { 'result_content': rec['result_content'],
... |
Get the result of 1 or more messages. | def get_results(self, client_id, msg):
"""Get the result of 1 or more messages."""
content = msg['content']
msg_ids = sorted(set(content['msg_ids']))
statusonly = content.get('status_only', False)
pending = []
completed = []
content = dict(status='ok')
con... |
Get a list of all msg_ids in our DB records | def get_history(self, client_id, msg):
"""Get a list of all msg_ids in our DB records"""
try:
msg_ids = self.db.get_history()
except Exception as e:
content = error.wrap_exception()
else:
content = dict(status='ok', history=msg_ids)
self.sessi... |
Perform a raw query on the task record database. | def db_query(self, client_id, msg):
"""Perform a raw query on the task record database."""
content = msg['content']
query = content.get('query', {})
keys = content.get('keys', None)
buffers = []
empty = list()
try:
records = self.db.find_records(query,... |
go to the path | def cd(self, newdir):
"""
go to the path
"""
prevdir = os.getcwd()
os.chdir(newdir)
try:
yield
finally:
os.chdir(prevdir) |
return a standard message | def decode_cmd_out(self, completed_cmd):
"""
return a standard message
"""
try:
stdout = completed_cmd.stdout.encode('utf-8').decode()
except AttributeError:
try:
stdout = str(bytes(completed_cmd.stdout), 'big5').strip()
except ... |
subprocess run on here | def run_command_under_r_root(self, cmd, catched=True):
"""
subprocess run on here
"""
RPATH = self.path
with self.cd(newdir=RPATH):
if catched:
process = sp.run(cmd, stdout=sp.PIPE, stderr=sp.PIPE)
else:
process = sp.run(cmd... |
Execute R script | def execute(self):
"""
Execute R script
"""
rprocess = OrderedDict()
commands = OrderedDict([
(self.file, ['Rscript', self.file] + self.cmd),
])
for cmd_name, cmd in commands.items():
rprocess[cmd_name] = self.run_command_under_r_root(cmd)
... |
Disconnect from the current kernel manager ( if any ) and set a new kernel manager. | def _set_kernel_manager(self, kernel_manager):
""" Disconnect from the current kernel manager (if any) and set a new
kernel manager.
"""
# Disconnect the old kernel manager, if necessary.
old_manager = self._kernel_manager
if old_manager is not None:
old_m... |
Calls the frontend handler associated with the message type of the given message. | def _dispatch(self, msg):
""" Calls the frontend handler associated with the message type of the
given message.
"""
msg_type = msg['header']['msg_type']
handler = getattr(self, '_handle_' + msg_type, None)
if handler:
handler(msg) |
Returns whether a reply from the kernel originated from a request from this frontend. | def _is_from_this_session(self, msg):
""" Returns whether a reply from the kernel originated from a request
from this frontend.
"""
session = self._kernel_manager.session.session
parent = msg['parent_header']
if not parent:
# if the message has no parent, ... |
Run the report. | def report(self, morfs, directory=None):
"""Run the report.
See `coverage.report()` for arguments.
"""
self.report_files(self.annotate_file, morfs, directory) |
Annotate a single file. | def annotate_file(self, cu, analysis):
"""Annotate a single file.
`cu` is the CodeUnit for the file to annotate.
"""
if not cu.relative:
return
filename = cu.filename
source = cu.source_file()
if self.directory:
dest_file = os.path.join(... |
returns a list of tuples ( package_name description ) for apt - cache search results | def find(name):
'''
returns a list of tuples (package_name, description) for apt-cache search results
'''
cmd = 'apt-cache search %s' % name
args = shlex.split(cmd)
try:
output = subprocess.check_output(args)
except CalledProcessError:
return []
lines = output.splitli... |
returns installed package version and None if package is not installed | def get_installed_version(name):
'''
returns installed package version and None if package is not installed
'''
pattern = re.compile(r'''Installed:\s+(?P<version>.*)''')
cmd = 'apt-cache policy %s' % name
args = shlex.split(cmd)
try:
output = subprocess.check_output(args)
... |
coerce unicode back to bytestrings. | def squash_unicode(obj):
"""coerce unicode back to bytestrings."""
if isinstance(obj,dict):
for key in obj.keys():
obj[key] = squash_unicode(obj[key])
if isinstance(key, unicode):
obj[squash_unicode(key)] = obj.pop(key)
elif isinstance(obj, list):
for ... |
Set the default behavior for a config environment to be secure. If Session. key/ keyfile have not been set set Session. key to a new random UUID. | def default_secure(cfg):
"""Set the default behavior for a config environment to be secure.
If Session.key/keyfile have not been set, set Session.key to
a new random UUID.
"""
if 'Session' in cfg:
if 'key' in cfg.Session or 'keyfile' in cfg.Session:
return
# key/key... |
Given a message or header return the header. | def extract_header(msg_or_header):
"""Given a message or header, return the header."""
if not msg_or_header:
return {}
try:
# See if msg_or_header is the entire message.
h = msg_or_header['header']
except KeyError:
try:
# See if msg_or_header is just the heade... |
check packers for binary data and datetime support. | def _check_packers(self):
"""check packers for binary data and datetime support."""
pack = self.pack
unpack = self.unpack
# check simple serialization
msg = dict(a=[1,'hi'])
try:
packed = pack(msg)
except Exception:
raise ValueError("packe... |
Return the nested message dict. | def msg(self, msg_type, content=None, parent=None, subheader=None, header=None):
"""Return the nested message dict.
This format is different from what is sent over the wire. The
serialize/unserialize methods converts this nested message dict to the wire
format, which is a list of messag... |
Sign a message with HMAC digest. If no auth return b. | def sign(self, msg_list):
"""Sign a message with HMAC digest. If no auth, return b''.
Parameters
----------
msg_list : list
The [p_header,p_parent,p_content] part of the message list.
"""
if self.auth is None:
return b''
h = self.auth.copy... |
Serialize the message components to bytes. | def serialize(self, msg, ident=None):
"""Serialize the message components to bytes.
This is roughly the inverse of unserialize. The serialize/unserialize
methods work with full message lists, whereas pack/unpack work with
the individual message parts in the message list.
Parame... |
Build and send a message via stream or socket. | def send(self, stream, msg_or_type, content=None, parent=None, ident=None,
buffers=None, subheader=None, track=False, header=None):
"""Build and send a message via stream or socket.
The message format used by this function internally is as follows:
[ident1,ident2,...,DELIM,HMAC,p_... |
Send a raw message via ident path. | def send_raw(self, stream, msg_list, flags=0, copy=True, ident=None):
"""Send a raw message via ident path.
This method is used to send a already serialized message.
Parameters
----------
stream : ZMQStream or Socket
The ZMQ stream or socket to use for sending the m... |
Receive and unpack a message. | def recv(self, socket, mode=zmq.NOBLOCK, content=True, copy=True):
"""Receive and unpack a message.
Parameters
----------
socket : ZMQStream or Socket
The socket or stream to use in receiving.
Returns
-------
[idents], msg
[idents] is a l... |
Split the identities from the rest of the message. | def feed_identities(self, msg_list, copy=True):
"""Split the identities from the rest of the message.
Feed until DELIM is reached, then return the prefix as idents and
remainder as msg_list. This is easily broken by setting an IDENT to DELIM,
but that would be silly.
Parameters... |
Unserialize a msg_list to a nested message dict. | def unserialize(self, msg_list, content=True, copy=True):
"""Unserialize a msg_list to a nested message dict.
This is roughly the inverse of serialize. The serialize/unserialize
methods work with full message lists, whereas pack/unpack work with
the individual message parts in the messa... |
Prompts the user to save an SVG document to disk. | def save_svg(string, parent=None):
""" Prompts the user to save an SVG document to disk.
Parameters:
-----------
string : basestring
A Python string containing a SVG document.
parent : QWidget, optional
The parent to use for the file dialog.
Returns:
--------
The name ... |
Copy a SVG document to the clipboard. | def svg_to_clipboard(string):
""" Copy a SVG document to the clipboard.
Parameters:
-----------
string : basestring
A Python string containing a SVG document.
"""
if isinstance(string, unicode):
string = string.encode('utf-8')
mime_data = QtCore.QMimeData()
mime_data.se... |
Convert a SVG document to a QImage. | def svg_to_image(string, size=None):
""" Convert a SVG document to a QImage.
Parameters:
-----------
string : basestring
A Python string containing a SVG document.
size : QSize, optional
The size of the image that is produced. If not specified, the SVG
document's default si... |
Make an object info dict with all fields present. | def object_info(**kw):
"""Make an object info dict with all fields present."""
infodict = dict(izip_longest(info_fields, [None]))
infodict.update(kw)
return infodict |
Stable wrapper around inspect. getdoc. | def getdoc(obj):
"""Stable wrapper around inspect.getdoc.
This can't crash because of attribute problems.
It also attempts to call a getdoc() method on the given object. This
allows objects which provide their docstrings via non-standard mechanisms
(like Pyro proxies) to still be inspected by ipy... |
Wrapper around inspect. getsource. | def getsource(obj,is_binary=False):
"""Wrapper around inspect.getsource.
This can be modified by other projects to provide customized source
extraction.
Inputs:
- obj: an object whose source code we will attempt to extract.
Optional inputs:
- is_binary: whether the object is known to co... |
Get the names and default values of a function s arguments. | def getargspec(obj):
"""Get the names and default values of a function's arguments.
A tuple of four things is returned: (args, varargs, varkw, defaults).
'args' is a list of the argument names (it may contain nested lists).
'varargs' and 'varkw' are the names of the * and ** arguments or None.
'def... |
Extract call tip data from an oinfo dict. | def call_tip(oinfo, format_call=True):
"""Extract call tip data from an oinfo dict.
Parameters
----------
oinfo : dict
format_call : bool, optional
If True, the call line is formatted and returned as a string. If not, a
tuple of (name, argspec) is returned.
Returns
-------
... |
Find the absolute path to the file where an object was defined. | def find_file(obj):
"""Find the absolute path to the file where an object was defined.
This is essentially a robust wrapper around `inspect.getabsfile`.
Returns None if no file can be found.
Parameters
----------
obj : any Python object
Returns
-------
fname : str
The absol... |
Find the line number in a file where an object was defined. | def find_source_lines(obj):
"""Find the line number in a file where an object was defined.
This is essentially a robust wrapper around `inspect.getsourcelines`.
Returns None if no file can be found.
Parameters
----------
obj : any Python object
Returns
-------
lineno : int
... |
Return the definition header for any callable object. | def _getdef(self,obj,oname=''):
"""Return the definition header for any callable object.
If any exception is generated, None is returned instead and the
exception is suppressed."""
try:
# We need a plain string here, NOT unicode!
hdef = oname + inspect.formatarg... |
Return a header string with proper colors. | def __head(self,h):
"""Return a header string with proper colors."""
return '%s%s%s' % (self.color_table.active_colors.header,h,
self.color_table.active_colors.normal) |
Generic message when no information is found. | def noinfo(self, msg, oname):
"""Generic message when no information is found."""
print 'No %s found' % msg,
if oname:
print 'for %s' % oname
else:
print |
Print the definition header for any callable object. | def pdef(self, obj, oname=''):
"""Print the definition header for any callable object.
If the object is a class, print the constructor information."""
if not callable(obj):
print 'Object is not callable.'
return
header = ''
if inspect.isclass(obj):
... |
Print the docstring for any object. | def pdoc(self,obj,oname='',formatter = None):
"""Print the docstring for any object.
Optional:
-formatter: a function to run the docstring through for specially
formatted docstrings.
Examples
--------
In [1]: class NoInit:
...: pass
In [... |
Print the source code for an object. | def psource(self,obj,oname=''):
"""Print the source code for an object."""
# Flush the source cache because inspect can return out-of-date source
linecache.checkcache()
try:
src = getsource(obj)
except:
self.noinfo('source',oname)
else:
... |
Show the whole file where an object was defined. | def pfile(self, obj, oname=''):
"""Show the whole file where an object was defined."""
lineno = find_source_lines(obj)
if lineno is None:
self.noinfo('file', oname)
return
ofile = find_file(obj)
# run contents of file through pager starting at li... |
Formats a list of fields for display. | def _format_fields(self, fields, title_width=12):
"""Formats a list of fields for display.
Parameters
----------
fields : list
A list of 2-tuples: (field_title, field_content)
title_width : int
How many characters to pad titles to. Default 12.
"""
... |
Show detailed information about an object. | def pinfo(self,obj,oname='',formatter=None,info=None,detail_level=0):
"""Show detailed information about an object.
Optional arguments:
- oname: name of the variable pointing to the object.
- formatter: special formatter for docstrings (see pdoc)
- info: a structure with some... |
Compute a dict with detailed information about an object. | def info(self, obj, oname='', formatter=None, info=None, detail_level=0):
"""Compute a dict with detailed information about an object.
Optional arguments:
- oname: name of the variable pointing to the object.
- formatter: special formatter for docstrings (see pdoc)
- info: a ... |
Search namespaces with wildcards for objects. | def psearch(self,pattern,ns_table,ns_search=[],
ignore_case=False,show_all=False):
"""Search namespaces with wildcards for objects.
Arguments:
- pattern: string containing shell-like wildcards to use in namespace
searches and optionally a type specification to narrow th... |
Start the Twisted reactor in a separate thread if not already done. Returns the reactor. The thread will automatically be destroyed when all the tests are done. | def threaded_reactor():
"""
Start the Twisted reactor in a separate thread, if not already done.
Returns the reactor.
The thread will automatically be destroyed when all the tests are done.
"""
global _twisted_thread
try:
from twisted.internet import reactor
except ImportError:
... |
Stop the reactor and join the reactor thread until it stops. Call this function in teardown at the module or package level to reset the twisted system after your tests. You * must * do this if you mix tests using these tools and tests using twisted. trial. | def stop_reactor():
"""Stop the reactor and join the reactor thread until it stops.
Call this function in teardown at the module or package level to
reset the twisted system after your tests. You *must* do this if
you mix tests using these tools and tests using twisted.trial.
"""
global _twisted... |
By wrapping a test function with this decorator you can return a twisted Deferred and the test will wait for the deferred to be triggered. The whole test function will run inside the Twisted event loop. | def deferred(timeout=None):
"""
By wrapping a test function with this decorator, you can return a
twisted Deferred and the test will wait for the deferred to be triggered.
The whole test function will run inside the Twisted event loop.
The optional timeout parameter specifies the maximum duration o... |
Return best matching substring of corpus. | def find_best_string(query,
corpus,
step=4,
flex=3,
case_sensitive=False):
"""Return best matching substring of corpus.
Parameters
----------
query : str
corpus : str
step : int
Step size of first match-... |
Return a function to the name method on a singleton coverage object. | def _singleton_method(name):
"""Return a function to the `name` method on a singleton `coverage` object.
The singleton object is created the first time one of these functions is
called.
"""
# Disable pylint msg W0612, because a bunch of variables look unused, but
# they're accessed via locals(... |
Encodes the stored data to XML and returns a string. | def to_string(self, indent=True, declaration=True):
"""Encodes the stored ``data`` to XML and returns a
``string``.
Setting ``indent`` to ``False`` will forego any pretty-printing
and return a condensed value.
Setting ``declaration`` to ``False`` will skip inserting the
... |
Encodes the stored data to XML and returns an lxml. etree value. | def to_xml(self):
"""Encodes the stored ``data`` to XML and returns
an ``lxml.etree`` value.
"""
if self.data:
self.document = self._update_document(self.document, self.data)
return self.document |
Recursively loads all modules from a package object or set of package objects | def load_all_modules_in_packages(package_or_set_of_packages):
"""
Recursively loads all modules from a package object, or set of package objects
:param package_or_set_of_packages: package object, or iterable of package objects
:return: list of all unique modules discovered by the function
"""
i... |
Helper function for merge. | def __dict_invert(self, data):
"""Helper function for merge.
Takes a dictionary whose values are lists and returns a dict with
the elements of each list as keys and the original keys as values.
"""
outdict = {}
for k,lst in data.items():
if isinstance(lst, st... |
Merge two Structs with customizable conflict resolution. | def merge(self, __loc_data__=None, __conflict_solve=None, **kw):
"""Merge two Structs with customizable conflict resolution.
This is similar to :meth:`update`, but much more flexible. First, a
dict is made from data+key=value pairs. When merging this dict with
the Struct S, the optional... |
like vars () but support __slots__. | def fullvars(obj):
'''
like `vars()` but support `__slots__`.
'''
try:
return vars(obj)
except TypeError:
pass
# __slots__
slotsnames = set()
for cls in type(obj).__mro__:
__slots__ = getattr(cls, '__slots__', None)
if __slots__:
if isinstanc... |
convert object to primitive type so we can serialize it to data format like python. | def object_to_primitive(obj):
'''
convert object to primitive type so we can serialize it to data format like python.
all primitive types: dict, list, int, float, bool, str, None
'''
if obj is None:
return obj
if isinstance(obj, (int, float, bool, str)):
return obj
if isin... |
Run as a command - line script: colorize a python file or stdin using ANSI color escapes and print to stdout. | def main(argv=None):
"""Run as a command-line script: colorize a python file or stdin using ANSI
color escapes and print to stdout.
Inputs:
- argv(None): a list of strings like sys.argv[1:] giving the command-line
arguments. If None, use sys.argv[1:].
"""
usage_msg = """%prog [optio... |
Parse and send the colored source. | def format2(self, raw, out = None, scheme = ''):
""" Parse and send the colored source.
If out and scheme are not specified, the defaults (given to
constructor) are used.
out should be a file-type object. Optionally, out can be given as the
string 'str' and the parser will auto... |
Get a list of matplotlib figures by figure numbers. | def getfigs(*fig_nums):
"""Get a list of matplotlib figures by figure numbers.
If no arguments are given, all available figures are returned. If the
argument list contains references to invalid figures, a warning is printed
but the function continues pasting further figures.
Parameters
------... |
Convert a figure to svg or png for inline display. | def print_figure(fig, fmt='png'):
"""Convert a figure to svg or png for inline display."""
# When there's an empty figure, we shouldn't return anything, otherwise we
# get big blank areas in the qt console.
if not fig.axes and not fig.lines:
return
fc = fig.get_facecolor()
ec = fig.get_... |
Factory to return a matplotlib - enabled runner for %run. | def mpl_runner(safe_execfile):
"""Factory to return a matplotlib-enabled runner for %run.
Parameters
----------
safe_execfile : function
This must be a function with the same interface as the
:meth:`safe_execfile` method of IPython.
Returns
-------
A function suitable for use a... |
Select figure format for inline backend either png or svg. | def select_figure_format(shell, fmt):
"""Select figure format for inline backend, either 'png' or 'svg'.
Using this method ensures only one figure format is active at a time.
"""
from matplotlib.figure import Figure
from IPython.zmq.pylab import backend_inline
svg_formatter = shell.display_for... |
Given a gui string return the gui and mpl backend. | def find_gui_and_backend(gui=None):
"""Given a gui string return the gui and mpl backend.
Parameters
----------
gui : str
Can be one of ('tk','gtk','wx','qt','qt4','inline').
Returns
-------
A tuple of (gui, backend) where backend is one of ('TkAgg','GTKAgg',
'WXAgg','Qt4Agg','... |
Activate the given backend and set interactive to True. | def activate_matplotlib(backend):
"""Activate the given backend and set interactive to True."""
import matplotlib
if backend.startswith('module://'):
# Work around bug in matplotlib: matplotlib.use converts the
# backend_id to lowercase even if a module name is specified!
matplotlib... |
Import the standard pylab symbols into user_ns. | def import_pylab(user_ns, import_all=True):
"""Import the standard pylab symbols into user_ns."""
# Import numpy as np/pyplot as plt are conventions we're trying to
# somewhat standardize on. Making them available to users by default
# will greatly help this.
s = ("import numpy\n"
"impor... |
Configure an IPython shell object for matplotlib use. | def configure_inline_support(shell, backend, user_ns=None):
"""Configure an IPython shell object for matplotlib use.
Parameters
----------
shell : InteractiveShell instance
backend : matplotlib backend
user_ns : dict
A namespace where all configured variables will be placed. If not giv... |
Activate pylab mode in the user s namespace. | def pylab_activate(user_ns, gui=None, import_all=True, shell=None):
"""Activate pylab mode in the user's namespace.
Loads and initializes numpy, matplotlib and friends for interactive use.
Parameters
----------
user_ns : dict
Namespace where the imports will occur.
gui : optional, strin... |
The trace function passed to sys. settrace. | def _trace(self, frame, event, arg_unused):
"""The trace function passed to sys.settrace."""
if self.stopped:
return
if 0:
sys.stderr.write("trace event: %s %r @%d\n" % (
event, frame.f_code.co_filename, frame.f_lineno
))
if self.las... |
Start this Tracer. | def start(self):
"""Start this Tracer.
Return a Python function suitable for use with sys.settrace().
"""
self.thread = threading.currentThread()
sys.settrace(self._trace)
return self._trace |
Stop this Tracer. | def stop(self):
"""Stop this Tracer."""
self.stopped = True
if self.thread != threading.currentThread():
# Called on a different thread than started us: we can't unhook
# ourseves, but we've set the flag that we should stop, so we won't
# do any more tracing.
... |
Start a new Tracer object and store it in self. tracers. | def _start_tracer(self):
"""Start a new Tracer object, and store it in self.tracers."""
tracer = self._trace_class()
tracer.data = self.data
tracer.arcs = self.branch
tracer.should_trace = self.should_trace
tracer.should_trace_cache = self.should_trace_cache
trace... |
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