title stringlengths 10 172 | question_id int64 469 40.1M | question_body stringlengths 22 48.2k | question_score int64 -44 5.52k | question_date stringlengths 20 20 | answer_id int64 497 40.1M | answer_body stringlengths 18 33.9k | answer_score int64 -38 8.38k | answer_date stringlengths 20 20 | tags list |
|---|---|---|---|---|---|---|---|---|---|
How to get all the tags in an XML using python? | 38,790,012 | <p>I have been researching in the Python Docs for a way to get the tag names from an XML file, but I haven't been very successful. Using the XML file below, one can get the country name tags, and all its associated child tags. Does anyone know how this is done?</p>
<pre><code><?xml version="1.0"?>
<data>
... | 0 | 2016-08-05T13:05:27Z | 38,792,638 | <p>Consider using element tree's <code>iterparse()</code> and build nested lists of tag and text pairs. Conditional <code>if</code> logic is used to group country items together and leave out elements with no text, then <code>replace()</code> is used to clean out the line breaks and multiple white spaces that <code>ite... | 1 | 2016-08-05T15:15:21Z | [
"python",
"xml",
"python-3.x"
] |
jedi fails to correctly autocomplete from package with the same name as the module that I'm in | 38,790,067 | <p>I'm using emacs and I have configured jedi.el so it autocompletes after dot.
Let's assume that I'm writing a module <code>my_app.my_module</code> and I have package installed in env called <code>my_module</code>.
My file <code>my_app/my_module.py</code> will look like:</p>
<pre><code>import my_module
class SomeCla... | 1 | 2016-08-05T13:07:41Z | 38,911,520 | <p>It turned out that this is a problem of <code>jedi</code>, not of <code>jedi.el</code>.
Furthermore it seems that this behavior is specific for projects based on <code>pyramid</code> framework.</p>
| 0 | 2016-08-12T06:42:33Z | [
"python",
"emacs",
"autocomplete",
"jedi",
"emacs-jedi"
] |
An Error: 'Numpy.str_' object has no attribute 'decode' | 38,790,126 | <p>I tried to run a test on Crab(an open source recommender system) based on python3. Then an error occurred:</p>
<pre><code>Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/Dennis/anaconda/lib/python3.5/site-packages/scikits/crab/datasets/base.py", line 201, in load_... | 0 | 2016-08-05T13:10:11Z | 38,790,266 | <p>The problem is that <code>rating</code> is a string within a string, so when you try casting a string like <code>"b'3.0'"</code> into a float, it gives a <code>valueError</code> because you still have the <code>b</code> in front which cannot be converted into float.</p>
<p>I imagine you need the byte encoding in fr... | 0 | 2016-08-05T13:16:34Z | [
"python",
"python-3.x",
"numpy",
"attributes"
] |
Django 1.10 python 3.5 django-admin-tools | 38,790,152 | <p>I am using Django 1.10 and installed django-admin-tools. Settings look like this:</p>
<pre><code>INSTALLED_APPS = [
'admin_tools',
'admin_tools.theming',
'admin_tools.menu',
'admin_tools.dashboard',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django... | 0 | 2016-08-05T13:11:21Z | 38,790,255 | <p>It looks like you are running Django 1.10, not 1.9 as you originally said. In Django 1.10, <code>patterns</code> has been removed (<a href="https://docs.djangoproject.com/en/1.10/releases/1.10/#removed-features-1-10" rel="nofollow">release notes</a>).</p>
<p>The issue <a href="https://github.com/django-admin-tools/... | 0 | 2016-08-05T13:15:42Z | [
"python",
"django",
"django-admin",
"django-admin-tools",
"django-1.10"
] |
Django 1.10 python 3.5 django-admin-tools | 38,790,152 | <p>I am using Django 1.10 and installed django-admin-tools. Settings look like this:</p>
<pre><code>INSTALLED_APPS = [
'admin_tools',
'admin_tools.theming',
'admin_tools.menu',
'admin_tools.dashboard',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django... | 0 | 2016-08-05T13:11:21Z | 38,791,282 | <p>It was indeed 1.10 </p>
<p>After downloading from github install migrate ran perfectly.</p>
<p>However.....</p>
<p>When I try to get the dashboard I get a 404 </p>
<pre><code>http://127.0.0.1:8000/dashboard/
Using the URLconf defined in cvixweb.urls, Django tried these URL patterns, in this order:
1. ^admin_tool... | 0 | 2016-08-05T14:07:53Z | [
"python",
"django",
"django-admin",
"django-admin-tools",
"django-1.10"
] |
Socio login in Django | 38,790,339 | <p>I am trying to build social login in Django, but it is not working fine.</p>
<p>How am doing:</p>
<ol>
<li>Installed python-social-auth</li>
<li><p>added this in INSTALLED_APPS:</p>
<pre><code>'social.apps.django_app.default',
</code></pre></li>
<li><p>Migrated DB (with no errors)</p></li>
<li><p>Added this in ur... | 0 | 2016-08-05T13:20:07Z | 38,790,705 | <p>In point six replace</p>
<pre><code>href="{% url "social:begin" "facebook"%}"
</code></pre>
<p>with</p>
<pre><code>href="{% url 'social:begin' 'facebook'%}"
</code></pre>
<p>I think you are running into a problem when the first <code>"</code> in <code>"social:begin"</code> ends the <code>"</code> after <code>hre... | 1 | 2016-08-05T13:37:34Z | [
"python",
"django",
"facebook",
"python-social-auth"
] |
generate a heatmap from a dataframe with python and seaborn | 38,790,360 | <p>I'm new to Python and fairly new to seaborn.</p>
<p>I have a pandas dataframe named df which looks like:</p>
<pre><code>TIMESTAMP ACT_TIME_AERATEUR_1_F1 ACT_TIME_AERATEUR_1_F2 ACT_TIME_AERATEUR_1_F3 ACT_TIME_AERATEUR_1_F4 ACT_TIME_AERATEUR_1_F5 ACT_TIME_AERATEUR_1_F6
2015-08-01 23:00:00 80 0 0 0 10 0
2015-08-01 2... | 0 | 2016-08-05T13:20:45Z | 38,790,687 | <p>Remove the timestamp variables(i.e. first two columns) before passing it to sns.heatmap, no need for the load dataset as well, just use:</p>
<pre><code>sns.heatmap(df.iloc[:,2:],annot=True, fmt="d", linewidths=.5)
</code></pre>
<h1>EDIT</h1>
<p>Ok here is your dataframe, just changed the column names in the inter... | 0 | 2016-08-05T13:36:26Z | [
"python",
"heatmap",
"seaborn"
] |
Pandas: parse columns from csv | 38,790,368 | <p>I have data in csv file without header. I need to parse some columns.</p>
<p>A part of data:</p>
<pre><code>-1.0,-0.0246259814315,1174.60023796
1.0,-0.978057706084,1083.19880269
-1.0,0.314271994507,-1472.97760911
-1.0,0.179751565771,231.017267343
1.0,-1.26254374278,-778.271726463
-1.0,0.249969939456,-52.801482653... | 0 | 2016-08-05T13:21:07Z | 38,792,280 | <p>IIUC indices are zero-based so you need:</p>
<pre><code>train_X = pd.read_csv("perceptron-train.csv", sep=',', parse_dates=[1], usecols=[1, 2])
</code></pre>
<p>Also I don't know if this also means you need to change your date col:</p>
<pre><code>train_X = pd.read_csv("perceptron-train.csv", sep=',', parse_dates=... | 1 | 2016-08-05T14:57:38Z | [
"python",
"pandas"
] |
Python/Pyserial: reading incoming information from port | 38,790,422 | <p>I've just started using pyserial as I will eventually need to read/save information coming from a particular port. Using the following code I am merely printing the port used and then trying to write and then read in some text ("hello"). The port is printing fine, but the output of my string is coming out as 5. Any ... | 1 | 2016-08-05T13:23:55Z | 38,790,810 | <pre><code>x = ser.write("hello")
print x
</code></pre>
<p>You writing this as sended. It's not recieved info. Probably it writes the lenght of string you have sended.
First you need to have a client side script which will response your sended information.</p>
<p>And you have to use something like this on it.</p>
<p... | 0 | 2016-08-05T13:44:02Z | [
"python",
"pyserial",
"virtual-serial-port"
] |
Python/Pyserial: reading incoming information from port | 38,790,422 | <p>I've just started using pyserial as I will eventually need to read/save information coming from a particular port. Using the following code I am merely printing the port used and then trying to write and then read in some text ("hello"). The port is printing fine, but the output of my string is coming out as 5. Any ... | 1 | 2016-08-05T13:23:55Z | 38,792,398 | <p>you can do it this way to test it. Firstly create a pair of ports in manage ports</p>
<p>First port: COM199
Second Port: COM188</p>
<p>Click Add Pair</p>
<p><strong>On one console/script do the below steps:</strong></p>
<pre><code>>>> import serial
>>> ser = serial.Serial('COM196', 9600,timeout... | 1 | 2016-08-05T15:03:24Z | [
"python",
"pyserial",
"virtual-serial-port"
] |
Python: How to plot heat map of 2D matrix by ignoring zeros? | 38,790,536 | <p>I have a matrix of size 500 X 28000, which contains a lot of zeros in between. But let us consider a working example with the matrix A: </p>
<pre><code>A = [[0, 0, 0, 1, 0],
[1, 0, 0, 2, 3],
[5, 3, 0, 0, 0],
[5, 0, 1, 0, 3],
[6, 0, 0, 9, 0]]
</code></pre>
<p>I would like to plot a heatmap of the ab... | 1 | 2016-08-05T13:29:24Z | 38,790,834 | <p>If you remove the LogNorm, you get black squares instead of white:</p>
<pre><code>im = plt.matshow(A, cmap=plt.cm.hot, aspect='auto') # pl is pylab imported a pl
</code></pre>
<p><a href="http://i.stack.imgur.com/05OBj.png" rel="nofollow"><img src="http://i.stack.imgur.com/05OBj.png" alt="enter image description h... | 2 | 2016-08-05T13:45:26Z | [
"python",
"python-2.7",
"matplotlib",
"heatmap",
"colormap"
] |
Python: How to plot heat map of 2D matrix by ignoring zeros? | 38,790,536 | <p>I have a matrix of size 500 X 28000, which contains a lot of zeros in between. But let us consider a working example with the matrix A: </p>
<pre><code>A = [[0, 0, 0, 1, 0],
[1, 0, 0, 2, 3],
[5, 3, 0, 0, 0],
[5, 0, 1, 0, 3],
[6, 0, 0, 9, 0]]
</code></pre>
<p>I would like to plot a heatmap of the ab... | 1 | 2016-08-05T13:29:24Z | 38,792,917 | <p>This answer is in the same direction as 'Edit 2' section of Luis' answer. In fact, this is a simplified version of it. I am posting this just in order to correct my misleading statements in my comments. I saw a warning that we should not discuss in the comment area, so I am using this answering area.</p>
<p>Anyway,... | 1 | 2016-08-05T15:31:36Z | [
"python",
"python-2.7",
"matplotlib",
"heatmap",
"colormap"
] |
Python: How to plot heat map of 2D matrix by ignoring zeros? | 38,790,536 | <p>I have a matrix of size 500 X 28000, which contains a lot of zeros in between. But let us consider a working example with the matrix A: </p>
<pre><code>A = [[0, 0, 0, 1, 0],
[1, 0, 0, 2, 3],
[5, 3, 0, 0, 0],
[5, 0, 1, 0, 3],
[6, 0, 0, 9, 0]]
</code></pre>
<p>I would like to plot a heatmap of the ab... | 1 | 2016-08-05T13:29:24Z | 39,510,090 | <p>Although the answer of norio is correct. I think one can give a much more to the point quick answer with only a few lines of code:</p>
<pre><code>import numpy as np
import matplotlib.pyplot as plt
A = np.asarray(A)
x,y = A.nonzero() #get the notzero indices
plt.scatter(x,y,c=A[x,y],s=100,cmap='hot',marker='s') #adj... | 0 | 2016-09-15T11:36:35Z | [
"python",
"python-2.7",
"matplotlib",
"heatmap",
"colormap"
] |
python get data from div blocks | 38,790,548 | <p>I am trying to parse div block using Beautiful Soup </p>
<p>Which is </p>
<pre><code><div class="same-height-left" style="height: 20px;"><span class="value-frame">&nbsp;whatever</span></div>
</code></pre>
<p>I want to get [what i expect]:</p>
<p><code>whatever</code> or <code><spa... | 1 | 2016-08-05T13:29:50Z | 38,791,471 | <p>How about this:</p>
<pre><code>from bs4 import BeautifulSoup
html = """<div class="same-height-left" style="height: 20px;"><span class="value-frame">&nbsp;whatever</span></div>"""
soup = BeautifulSoup(html, 'html.parser')
method1 = soup.find('div').text
method2 = soup.find('div').find... | 1 | 2016-08-05T14:17:33Z | [
"python",
"beautifulsoup"
] |
pandas data frame: Find consecutive values and ignoring gaps of certain size | 38,790,647 | <p>I am struggeling with hourly precipitation data like e.g.</p>
<pre><code>index=pd.date_range('1/1/2011', periods=365*24, freq='H')
precipitation_indicator=np.random.randint(low=0, high=2, size=(365*24,))
precipitation_sum=np.random.ranf((365*24,))*6*precipitation_indicator
prec_dataH=pd.DataFrame(data={'prec_ind':... | 0 | 2016-08-05T13:34:21Z | 38,855,249 | <p>Add <code>group = group.copy()</code> as the first line in the <code>for</code> loop. That gets rid of the <code>SettingWithCopyWarning</code> and speeds up your computation by a factor of ~60.</p>
<pre><code>def approach1():
rainEvents=prec_dataH.groupby('event_no')
groups=[]
for name, group in rainEv... | 0 | 2016-08-09T15:48:17Z | [
"python",
"pandas",
"dataframe"
] |
Mayavi: rotate around y axis | 38,790,724 | <p>I'm plotting a 3D mesh using mayavi's <code>triangular_mesh</code> method. The data describes a human silhouette laying face-down in 3D space (so the <code>cmap</code> can be used to denote distance from the camera).</p>
<p>Here's the code used to generate the plot (the faces and vertices come from an external obje... | 8 | 2016-08-05T13:38:41Z | 38,792,397 | <p>You need some math here. Ok, here is how to do it in terms of code, its not the best code but I wanted to make it self-explanatory. I use the Rodrigues formula for rotation in 3d to achieve this, az_new and el_new are your new viewing angles. Change the value of theta to get a different viewing angle in your frame o... | 2 | 2016-08-05T15:03:24Z | [
"python",
"3d",
"mayavi"
] |
Mayavi: rotate around y axis | 38,790,724 | <p>I'm plotting a 3D mesh using mayavi's <code>triangular_mesh</code> method. The data describes a human silhouette laying face-down in 3D space (so the <code>cmap</code> can be used to denote distance from the camera).</p>
<p>Here's the code used to generate the plot (the faces and vertices come from an external obje... | 8 | 2016-08-05T13:38:41Z | 38,895,027 | <p>It turns out there's a bit of a workaround for this.</p>
<p>You can rotate the actors on their axes independently of the camera. (This throws the visualization out of step with the data labeling, but as I'm actually hiding the axes of the figure it doesn't matter in this case.)</p>
<p>All you need to do is:</p>
<... | 0 | 2016-08-11T11:24:23Z | [
"python",
"3d",
"mayavi"
] |
numpy.frombuffer ValueError: buffer is smaller than requested size | 38,790,819 | <p>I have the error listed above, but have been unable to find what it means. I am new to numpy and its {.frombuffer()} command. The code where this error is triggering is:</p>
<pre><code>ARRAY_1=400000004
fid=open(fn,'rb')
fid.seek(w+x+y+z) #w+x+y+z=
if(condition==0):
b=fid.read(struct.calcsize(fmt+str(ARRAY_1)+'... | 0 | 2016-08-05T13:44:35Z | 38,797,861 | <p><code>calcsize</code> gives the number of bytes that the buffer will have given the format.</p>
<pre><code>In [421]: struct.calcsize('>100h')
Out[421]: 200
In [422]: struct.calcsize('>100b')
Out[422]: 100
</code></pre>
<p><code>h</code> takes 2 bytes per item, so for 100 items, it gives 200 bytes.</p>
<p>Fo... | 0 | 2016-08-05T21:15:54Z | [
"python",
"numpy",
"buffer"
] |
Unable to properly install or load Tensorflow on Ubuntu 12.04 LTS with resultant ImportError | 38,790,852 | <p>I attempted the <a href="https://www.tensorflow.org/versions/r0.10/get_started/os_setup.html#anaconda-installation" rel="nofollow">Anaconda installation</a> for TensorFlow on my Ubuntu 12.04 LTS system, which went through, but while importing the library in Python, I came across an ImportError shown below.</p>
<p>I... | 1 | 2016-08-05T13:46:06Z | 38,791,345 | <p>This error probably relates to you glibc version. There are some topics regarding this:<a href="http://stackoverflow.com/questions/16605623/where-can-i-get-a-copy-of-the-file-libstdc-so-6-0-15">Where can I get a copy of the file libstdc++.so.6.0.15</a></p>
<p>First check whether the required version is on your syst... | 0 | 2016-08-05T14:10:52Z | [
"python",
"ubuntu",
"tensorflow",
"anaconda"
] |
Unable to properly install or load Tensorflow on Ubuntu 12.04 LTS with resultant ImportError | 38,790,852 | <p>I attempted the <a href="https://www.tensorflow.org/versions/r0.10/get_started/os_setup.html#anaconda-installation" rel="nofollow">Anaconda installation</a> for TensorFlow on my Ubuntu 12.04 LTS system, which went through, but while importing the library in Python, I came across an ImportError shown below.</p>
<p>I... | 1 | 2016-08-05T13:46:06Z | 38,793,952 | <p>You need to install <a href="http://packages.ubuntu.com/precise/libstdc++6" rel="nofollow">libstdc++6</a> with some dependencies like <code>gcc</code> an <code>g++</code>, at least <code>gcc-4.6</code> version:</p>
<pre><code>sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get insta... | 0 | 2016-08-05T16:31:41Z | [
"python",
"ubuntu",
"tensorflow",
"anaconda"
] |
Django1.8 'app' is not a registered namespace | 38,790,872 | <p>My error:</p>
<pre><code> <h1>{{ question.question_text }}</h1>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="{% url 'app:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_... | 0 | 2016-08-05T13:47:20Z | 38,791,077 | <p>Namespacing is used when you include another url config inside your root <code>urls.py</code>. The example in the tutorial works because they have <code>include('polls.urls')</code> <a href="https://docs.djangoproject.com/en/1.10/intro/tutorial01/#write-your-first-view" rel="nofollow">in tutorial 1</a>, and then in ... | 0 | 2016-08-05T13:57:13Z | [
"python",
"django"
] |
Django1.8 'app' is not a registered namespace | 38,790,872 | <p>My error:</p>
<pre><code> <h1>{{ question.question_text }}</h1>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="{% url 'app:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_... | 0 | 2016-08-05T13:47:20Z | 38,801,618 | <p><a href="http://i.stack.imgur.com/4sBN2.png" rel="nofollow">My Project picture</a></p>
<p>I added a new urls.py</p>
<p>this codeï¼mydjango/urls.py</p>
<hr>
<pre><code>from django.conf.urls import url,include
from django.contrib import admin
urlpatterns = [
url(r'^app/', include('app.urls')),
url(r'^adm... | 0 | 2016-08-06T07:17:28Z | [
"python",
"django"
] |
Python select.select monitoring sockets in separate threads | 38,790,913 | <p>Is it allowed to create connections in separate threds, and than put them in select input list, and then call <code>select.select(input_list, [], [])</code> from main thread if except that call main thread do not use these connections?</p>
| 1 | 2016-08-05T13:49:15Z | 38,791,944 | <p>Yes, it should be possible.
Check out these (related) posts for more details: <a href="http://stackoverflow.com/questions/8273297/keeping-a-socket-opened-in-a-thread-and-sending-commands-from-main">first</a>, <a href="http://stackoverflow.com/questions/8282216/multiple-threaded-socket-connections-queues">second</a>.... | 0 | 2016-08-05T14:40:59Z | [
"python",
"python-2.7",
"python-3.x"
] |
Excel Workbook to html Django/Python | 38,790,938 | <p>Is there any way to take an excel workbook, and display it on a webpage with the same formatting as the workbook? Im wondering if there is a way to take an excel workbook and paste the contents on a webpage. Basically im looking for something to screenshot the excel document and paste in in my webpage... Is there an... | 1 | 2016-08-05T13:50:16Z | 38,791,031 | <p>There's many ways to get around doing what you're referring to. Would you be open to using Google Sheets or do it have to be MS Excel? If so, I'd say use google drive and Google Sync. This way, you can make your excel on your local machine, save it. Create a python script that copies the file from the saved loca... | 0 | 2016-08-05T13:54:57Z | [
"python",
"html",
"django",
"excel",
"xlsxwriter"
] |
Excel Workbook to html Django/Python | 38,790,938 | <p>Is there any way to take an excel workbook, and display it on a webpage with the same formatting as the workbook? Im wondering if there is a way to take an excel workbook and paste the contents on a webpage. Basically im looking for something to screenshot the excel document and paste in in my webpage... Is there an... | 1 | 2016-08-05T13:50:16Z | 38,801,806 | <p>should the xl file reside in your local machine? or are you open to storing it in the cloud ? Since you mentioned zoho viewer you might want to check out zoho office APIs <a href="https://www.zoho.com/docs/help/office-apis.html" rel="nofollow">here</a> using which you can use the API to upload a file and get back a... | 1 | 2016-08-06T07:41:20Z | [
"python",
"html",
"django",
"excel",
"xlsxwriter"
] |
Sengrid templates with custom image for every email | 38,791,130 | <p>How to send sengrid email with custom image which is inserto to template with tag?</p>
<p>I have transactional email and I want insert image of item user is interested.</p>
<p>I know how to add tags for custom information to template. But what about images?</p>
<p>Maybe is possible to do something like this:</p>
... | 1 | 2016-08-05T14:00:13Z | 38,804,153 | <p>Solved.
I just need to create tag for image url.</p>
<pre><code>personalization.add_substitution(Substitution("%image_url%", "http://some_url.to.image ))
</code></pre>
| 0 | 2016-08-06T12:09:55Z | [
"python",
"sendgrid"
] |
ipdb how to bring the python debugger up to the frame which called the third-party code | 38,791,146 | <p>In my python code, I have several levels of call stacks like this:</p>
<pre><code>f1:user_func1
f2:**user_func2**
f3:third_party_func1
f4:third_party_func2
f5:exception happens here.
</code></pre>
<p>An exception happens somewhere in the third-party code (frame f5). I use ipdb to go the fra... | 0 | 2016-08-05T14:01:15Z | 39,272,786 | <p>From ipdb command line:</p>
<pre><code>ipdb> help up
u(p) [count]
Move the current frame count (default one) levels up in the
stack trace (to an older frame).
</code></pre>
| 0 | 2016-09-01T13:25:08Z | [
"python",
"debugging",
"ipdb"
] |
Rearrangement of string conditionally? | 38,791,198 | <p>I have spent the last 2 months working on a script that cleans, formats, and geocodes addresses. It is quite successful right now, however, there are some addresses that are giving me problems.</p>
<p>For example:</p>
<p>Addresses such as <code>7TH AVENUE 530 xxxxxxxxxxx</code> are causing my geolocation module to... | 0 | 2016-08-05T14:04:04Z | 38,791,955 | <p>I am not sure if this helps, but you can start with this:</p>
<pre><code>import re
address = '7TH AVENUE 530 xxxxxxxxxxx'
m = re.search('(?<=AVENUE )\d{1,3}', address)
print (m.group(0))
>>> 530
</code></pre>
<p>Edit based on your comment:</p>
<pre><code>import re
original = '7TH AVENUE 530 xxxxxxxxxx... | 0 | 2016-08-05T14:41:27Z | [
"python"
] |
Is there any interpreter that works well for running multiprocessing in python 2.7 version on windows 7? | 38,791,222 | <p>I was trying to run a piece of code.This code is all about multiprocessing.It works fine on command prompt and it also generates some output.But when I try to run this code on pyscripter it just says that script runs ok and it doesn't generate any output nor even it displays any error message.It doesn't even crashes... | 1 | 2016-08-05T14:05:17Z | 38,791,400 | <p>The normal interpreter works just fine with <code>multiprocessing</code> on Windows 7 for me. (Your IDE might not like multiprocessing.) </p>
<p>You just have to do</p>
<pre><code>if __name__=='__main__':
main()
</code></pre>
<p>with 2 underscores (<code>__</code>) each instead of 1 (<code>_</code>).</p>
<p>... | 0 | 2016-08-05T14:13:45Z | [
"python",
"windows-7",
"multiprocessing",
"command-prompt",
"interpreter"
] |
How to properly create hist in matplotlib? | 38,791,246 | <p>I want to plot a histogram with three columns with heights <code>5</code>, <code>10</code> and <code>20</code>. Each column will have a width of 1. So the first column will have height <code>5</code> on the interval <code>[0,1]</code>, the second one <code>10</code> on the interval <code>[1,2]</code> and so on.</p>
... | 1 | 2016-08-05T14:06:15Z | 38,791,449 | <p><code>hist</code> computes the number of data samples that lies within a given bin and then displays the resulting frequencies as a bar plot. You don't actually need <code>hist</code> because you already <em>have</em> the frequencies. You simply need <a href="http://matplotlib.org/api/pyplot_api.html#matplotlib.pypl... | 2 | 2016-08-05T14:16:10Z | [
"python",
"matplotlib",
"histogram"
] |
Difference between reading in vs declaring string python | 38,791,298 | <p>What is the difference (if any) between declaring a string in python vs reading in their value?</p>
<p>I have a piece of my code code which looks like:</p>
<pre><code>file = open('comport.txt','r')
for line in file:
if "comport" in line:
comport = line[9:]
</code></pre>
<p>and the text file just look... | 0 | 2016-08-05T14:08:36Z | 38,791,398 | <p>Probably there is still a linebreak <code>\n</code> after <code>"COM1"</code>. Try this: </p>
<pre><code> comport = line[9:].strip()
</code></pre>
<p>or this: </p>
<pre><code> comport = line.split("=")[1].strip()
</code></pre>
<p>Also, you should use <code>with</code> to open <em>and close</em> the ... | 2 | 2016-08-05T14:13:41Z | [
"python",
"string",
"pyserial"
] |
Python: How to search and replace parts of a json file? | 38,791,384 | <p>I'm new to Python and I would like to search and replace titles of IDs in a JSON-file. Normally I would use R for this Task, but how to do it in Python. Here a sample of my JSON code (with a Service ID and a layer ID). I'm interested in replacing the titles in the layer IDs:</p>
<pre><code> ...{"services": [
... | 0 | 2016-08-05T14:12:50Z | 38,791,525 | <p>You don't say which version of Python you are using but there are built-on JSON parsers for the language.</p>
<p>For 2.x: <a href="https://docs.python.org/2.7/library/json.html" rel="nofollow">https://docs.python.org/2.7/library/json.html</a></p>
<p>For 3.x: <a href="https://docs.python.org/3.4/library/json.html" ... | 0 | 2016-08-05T14:19:59Z | [
"python",
"json"
] |
Python: How to search and replace parts of a json file? | 38,791,384 | <p>I'm new to Python and I would like to search and replace titles of IDs in a JSON-file. Normally I would use R for this Task, but how to do it in Python. Here a sample of my JSON code (with a Service ID and a layer ID). I'm interested in replacing the titles in the layer IDs:</p>
<pre><code> ...{"services": [
... | 0 | 2016-08-05T14:12:50Z | 38,792,955 | <p>Here's an <a href="https://repl.it/Cjua/20" rel="nofollow">working example</a> on repl.it.</p>
<p>Code: </p>
<pre><code>import json
import io
import csv
### json input
input = """
{
"layers": [
{
"id": "0",
"title": "wrongTitle"
},
{
"id": "1",
"title": "againTitleWrong"
... | 2 | 2016-08-05T15:33:19Z | [
"python",
"json"
] |
Python: How to search and replace parts of a json file? | 38,791,384 | <p>I'm new to Python and I would like to search and replace titles of IDs in a JSON-file. Normally I would use R for this Task, but how to do it in Python. Here a sample of my JSON code (with a Service ID and a layer ID). I'm interested in replacing the titles in the layer IDs:</p>
<pre><code> ...{"services": [
... | 0 | 2016-08-05T14:12:50Z | 38,793,057 | <p>As other users suggested, check the JSON module will be helpful.
Here gives a basic example on python2.7:</p>
<pre><code> import json
j = '''{
"services":
[{
"id": "service",
"url": "http://...",
"title": "GEW",
"opti... | 0 | 2016-08-05T15:39:12Z | [
"python",
"json"
] |
How to create relations with django | 38,791,442 | <p>This will be my first post here so I hope that everything will be correct.</p>
<p>I got some trouble with django, I try to make a little lottery game.
For this game I have one app called bitcoinlottery and in that app 2 models. As for now they look like this:</p>
<pre><code>from django.db import models
from django... | 0 | 2016-08-05T14:15:52Z | 38,793,136 | <p>First of all I am not sure if your owner field would work. I don't see any imports for auth package</p>
<pre><code>owner = models.ForeignKey('auth.User')
</code></pre>
<p>Firstly I would suggest you look at this <a href="http://stackoverflow.com/questions/19433630/how-to-use-user-as-foreign-key-in-django-1-5">pos... | 0 | 2016-08-05T15:44:04Z | [
"python",
"django"
] |
Issue handling file from command line with biopython SeqIO | 38,791,527 | <p>This is my first attempt at using commandline args other than the quick and dirty <code>sys.argv[]</code> and writing a more 'proper' python script. For some reason that I can now not figure out, it seems to be objecting to how I'm trying to use the input file from the command line.</p>
<p>The script is meant to ta... | 0 | 2016-08-05T14:20:09Z | 38,795,962 | <p>As said in the comments, your variable <code>records</code> is only defined in the method <code>main()</code> (the same is true for <code>start</code> and <code>end</code>), thus it is not visible for the rest of the program.
You can either return the values like this:</p>
<pre><code>def main(argv):
...
...... | 1 | 2016-08-05T18:47:28Z | [
"python",
"biopython",
"getopt"
] |
Finding the no. of digits of each element in the list | 38,791,724 | <p>I tried the following code but it is giving me an error.How should i fix this problem?.</p>
<pre><code>import math
mylist=[3,4,12,34]
digits = int(math.log10(mylist))+1
Traceback (most recent call last):
File "prog.py", line 3, in <module>
TypeError: a float is required
</code></pre>
| 0 | 2016-08-05T14:30:05Z | 38,791,889 | <p>You are passing a list to <code>log10()</code> function, and that's while it accepts a float. You can use a list comprehension to calculate the log for all items within the list:</p>
<pre><code>>>> digits = [int(math.log10(i)) + 1 for i in mylist]
>>> digits
[1, 1, 2, 2]
</code></pre>
| 0 | 2016-08-05T14:38:13Z | [
"python",
"python-3.x",
"math"
] |
Finding the no. of digits of each element in the list | 38,791,724 | <p>I tried the following code but it is giving me an error.How should i fix this problem?.</p>
<pre><code>import math
mylist=[3,4,12,34]
digits = int(math.log10(mylist))+1
Traceback (most recent call last):
File "prog.py", line 3, in <module>
TypeError: a float is required
</code></pre>
| 0 | 2016-08-05T14:30:05Z | 38,792,020 | <p>This will return a list containing the number of digits of each element in <code>my_list</code>.</p>
<pre><code>from math import log10
my_list = [3, 4, 12, 34]
digits = [int(log10(n) + 1) for n in my_list]
</code></pre>
| 0 | 2016-08-05T14:44:55Z | [
"python",
"python-3.x",
"math"
] |
Finding the no. of digits of each element in the list | 38,791,724 | <p>I tried the following code but it is giving me an error.How should i fix this problem?.</p>
<pre><code>import math
mylist=[3,4,12,34]
digits = int(math.log10(mylist))+1
Traceback (most recent call last):
File "prog.py", line 3, in <module>
TypeError: a float is required
</code></pre>
| 0 | 2016-08-05T14:30:05Z | 38,985,785 | <p>Here's a working example:</p>
<pre><code>import math
def f(x):
return int(math.log10(x)) + 1
mylist = [3, 4, 12, 34]
digits = []
for x in mylist:
fx = f(x)
print("f({0})={1}".format(x, fx))
digits.append(fx)
</code></pre>
| 0 | 2016-08-16T23:06:54Z | [
"python",
"python-3.x",
"math"
] |
Double tap in IOS Simulator Not working | 38,791,731 | <p>I am trying to <code>double tap</code> an element in IOS Simulator using appium but unable to do so.</p>
<pre><code>Methods tried:
action.tap(x=xx, y=yy, count=1).release().perform()
</code></pre>
<p>2 times in a row,but it seems there is a 2 second gap which in real world would not be a double tap</p>
<pre><co... | 3 | 2016-08-05T14:30:34Z | 38,791,844 | <p>You should do both of the press commands before calling <code>perform()</code>:</p>
<pre><code>action.press(x=xx, y=yy).release().wait(500).press(x=xx, y=yy).release().perform()
</code></pre>
| 1 | 2016-08-05T14:36:17Z | [
"python",
"appium",
"appium-ios",
"python-appium"
] |
Double tap in IOS Simulator Not working | 38,791,731 | <p>I am trying to <code>double tap</code> an element in IOS Simulator using appium but unable to do so.</p>
<pre><code>Methods tried:
action.tap(x=xx, y=yy, count=1).release().perform()
</code></pre>
<p>2 times in a row,but it seems there is a 2 second gap which in real world would not be a double tap</p>
<pre><co... | 3 | 2016-08-05T14:30:34Z | 38,857,992 | <p>I call it in a similar way the first method you listed, its not as fast as double tap, but its less than one second delay
<code>Appium::TouchAction.new.tap(x: xx, y: yy, count: 2).perform</code> </p>
<p><code>.tap</code> dont need to use <code>release</code>, only <code>.press</code> need it</p>
| 1 | 2016-08-09T18:30:40Z | [
"python",
"appium",
"appium-ios",
"python-appium"
] |
Function annotation for subclasses of abstract class | 38,791,739 | <p>I'm trying to use function annotations in the hope that my editor will be better at refactoring. I however am stumbling over the following problem:</p>
<p>I have an abstract base class Algorithm.</p>
<pre><code>class Algorithm(metaclass=ABCMeta):
def __init__(self):
self.foo = 'bar'
</code></pre>... | 0 | 2016-08-05T14:30:58Z | 38,791,784 | <p>Just use <code>Algorithm</code> directly:</p>
<pre><code>def get_foo(foo_algorithm: Algorithm):
return foo_algoritm.foo
</code></pre>
<p>and automatically any instance of a subclass will be acceptable (<code>isinstance(foo_algorithm, Algorithm)</code> must be true, which applies to all subclasses of a baseclas... | 1 | 2016-08-05T14:33:21Z | [
"python",
"python-3.x",
"annotations",
"type-hinting"
] |
Sublime Text 3 - Language specific Goto definition Keyboard Shortcut | 38,791,826 | <p>How can I set "Goto Definition" work according to the language I'm working on.</p>
<p>For example:</p>
<p>In Python I want to use PythonIDE's go to definition:</p>
<pre><code>{
"keys": ["ctrl+d"],
"command": "python_goto_definition"
},
</code></pre>
<p>And, for any other language, for instanc... | 1 | 2016-08-05T14:35:22Z | 38,796,045 | <p>The context that you want is for <code>selector</code>:</p>
<pre><code>{
"keys": ["ctrl+d"],
"command": "python_goto_definition",
"context": [
{ "key": "selector", "operator": "equal", "operand": "source.python" }
]
},
</code></pre>
<p>You can add more or less specificity as needed. Use <kb... | 1 | 2016-08-05T18:53:33Z | [
"python",
"go",
"sublimetext3"
] |
Django ModelAdmin: update field without saving | 38,791,857 | <p>I have an admin page that looks like this: </p>
<pre><code>class NameAdmin(admin.ModelAdmin):
list_display = ['long_name', 'short_name']
search_fields = ['long_name','short_name']
</code></pre>
<p>In my admin page I have created a button (it is called "getname"), which after being pressed, should update the sh... | -1 | 2016-08-05T14:36:57Z | 38,793,540 | <p>I would create a form in forms.py:</p>
<pre><code>from django import forms
from myapp.models import MyModel
class MyModelForm(forms.ModelForm):
update_me = forms.CharField(max_length=100, required=False)
class Meta(Object):
model = MyModel
</code></pre>
<p>Then in admin.py:</p>
<pre><code>from d... | 0 | 2016-08-05T16:05:42Z | [
"python",
"django",
"modeladmin"
] |
How to control number of cores and processors in Python when we need to share state between processes | 38,791,898 | <p>In <a href="https://docs.python.org/2/library/multiprocessing.html#sharing-state-between-processes" rel="nofollow">document</a>, an example is shown about how to share state between processes. For the sake of time, I post the code in the document below.</p>
<pre><code>from multiprocessing import Process, Value, Arr... | 0 | 2016-08-05T14:38:38Z | 38,792,458 | <p>A possible answer:</p>
<pre><code>from multiprocessing import Process, Value, Array, Pool
import random
def f(n, a):
n.value = 3.1415927
a[random.randint(5)] = 0
if __name__ == '__main__':
num = Value('d', 0.0)
arr = Array('i', range(10))
# you can manually set the number of workers
worke... | 0 | 2016-08-05T15:06:22Z | [
"python",
"linux",
"python-multiprocessing"
] |
How can I count a word from all lines that are 2 rows after a specific line? | 38,791,960 | <p>So, this might sound a bit confusing, I'll try to explain it. For example from these lines:</p>
<pre><code>next line 1
^^^^^^^^^^^^^^^^^^
red blue dark ten lemon
next line 2
^^^^^^^^^^^^^^^^^^^
hat 45 no dad fate orange
next line 3
^^^^^^^^^^^^^^^^^^^
tan rat lovely lemon eat
you him lemon Daniel her"
</code></pre... | 2 | 2016-08-05T14:41:40Z | 38,792,153 | <p>For each line you need to be able to access to two line before it. For that aim you can use <code>itertools.tee</code> in order to create two independent file object (which are iterator-like objects) then use <code>itertools.izip()</code> in order to create your your expected pairs:</p>
<pre><code>from itertools im... | 3 | 2016-08-05T14:51:10Z | [
"python"
] |
How can I count a word from all lines that are 2 rows after a specific line? | 38,791,960 | <p>So, this might sound a bit confusing, I'll try to explain it. For example from these lines:</p>
<pre><code>next line 1
^^^^^^^^^^^^^^^^^^
red blue dark ten lemon
next line 2
^^^^^^^^^^^^^^^^^^^
hat 45 no dad fate orange
next line 3
^^^^^^^^^^^^^^^^^^^
tan rat lovely lemon eat
you him lemon Daniel her"
</code></pre... | 2 | 2016-08-05T14:41:40Z | 38,792,688 | <p>You can just loop over the file (which is an iterator) and call <code>next</code> two times whenever you find a <code>next line</code> line, then <code>count</code> how often <code>lemon</code> appears, with both the <code>for</code> loop and the calls to <code>next</code> are using the same iterator.</p>
<pre><cod... | 1 | 2016-08-05T15:18:02Z | [
"python"
] |
Insert statement at row where MyCol is x | 38,792,008 | <p>I have 2 columns MyCol and NewCol. MyCol has already been populated, and may have duplicates (it's not the primary key). I need to insert a value y into NewCol at all rows where MyCol = x. I'm stuck here and not sure how to implement this.</p>
| 0 | 2016-08-05T14:44:24Z | 38,792,680 | <p>This is just an update statement</p>
<pre><code>UPDATE TABLENAME
SET NewCol = Y
WHERE MyCol = x
</code></pre>
<p>Why exactly could you not find this in ANY introduction to SQL - book, article, reference, team-mate etc?</p>
| 1 | 2016-08-05T15:17:52Z | [
"python",
"sql",
"python-2.7",
"sqlite3"
] |
Unable to install Statsmodels...python | 38,792,043 | <p>I am using 32 bit cmd, 64 bit windows, python 2.7</p>
<p>when I type the command pip install statsmodels</p>
<p>I get the following error for some module of scipy...</p>
<pre><code>Failed building wheel for Scipy Failed cleaning build dir for scipy
</code></pre>
<p><a href="http://i.stack.imgur.com/xcF7d.png" re... | 0 | 2016-08-05T14:46:07Z | 38,792,465 | <p>An easier way to install python libraries on Windows with C/C++/Fortran/... dependencies is to use <code>conda</code>. <code>conda</code> is available in <a href="http://conda.pydata.org/miniconda.html" rel="nofollow">MiniConda</a> or <a href="https://www.continuum.io/downloads#_windows" rel="nofollow">Anaconda</a> ... | 3 | 2016-08-05T15:06:32Z | [
"python",
"python-2.7",
"scipy",
"pip",
"statsmodels"
] |
Unable to install Statsmodels...python | 38,792,043 | <p>I am using 32 bit cmd, 64 bit windows, python 2.7</p>
<p>when I type the command pip install statsmodels</p>
<p>I get the following error for some module of scipy...</p>
<pre><code>Failed building wheel for Scipy Failed cleaning build dir for scipy
</code></pre>
<p><a href="http://i.stack.imgur.com/xcF7d.png" re... | 0 | 2016-08-05T14:46:07Z | 38,792,924 | <p>install numpy</p>
<pre><code>pip install numpy
</code></pre>
<p>If you face installation issues for numpy, get the pre-built windows installers from <a href="http://www.lfd.uci.edu/~gohlke/pythonlibs/" rel="nofollow">http://www.lfd.uci.edu/~gohlke/pythonlibs/</a> for your python version (python version is differen... | 1 | 2016-08-05T15:31:56Z | [
"python",
"python-2.7",
"scipy",
"pip",
"statsmodels"
] |
How would you create two select menus where select menu B's contents are dependent on select menu A's selection? | 38,792,077 | <p>How do you create two select menus with one dict where select menu B has values that correspond and are dependent to the keys present in select menu A?</p>
<p>In my Django views.py, I've created a dictionary that has a lists of Projects as keys, and corresponding Tasks as values within the dictionary. It looks like... | 2 | 2016-08-05T14:47:42Z | 38,792,191 | <p>You can use <a href="http://django-autocomplete-light.readthedocs.io/en/master/" rel="nofollow"><code>django-autocomplete-light</code></a> to do this. This basically provides autocompletion using a client library such as <a href="https://select2.github.io/" rel="nofollow"><code>select2</code></a>. But it also provid... | 2 | 2016-08-05T14:53:13Z | [
"jquery",
"python",
"html",
"css",
"django"
] |
How to change color of subtext in the Text widget (Python) | 38,792,094 | <p>Is there a way to change the color of specific text in the Text widget in Tkinter?</p>
<p>Any answer will be welcomed.</p>
| -1 | 2016-08-05T14:48:53Z | 38,809,280 | <p>The Library manual has a tkinter chapter that lists some online and paper materials. I mostly use the <a href="http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/index.html" rel="nofollow">NMT reference</a>. See its Text widget sections and in particular the <a href="http://infohost.nmt.edu/tcc/help/pubs/tkinter/we... | 1 | 2016-08-06T22:25:47Z | [
"python",
"tkinter"
] |
How to group and count rows by month and year using Pandas? | 38,792,122 | <p>I have a dataset with personal data such as name, height, weight and date of birth. I would build a graph with the number of people born in a particular month and year. I'm using python pandas to accomplish this and my strategy was to try to group by year and month and add using count. But the closest I got is to ge... | 2 | 2016-08-05T14:49:47Z | 38,792,175 | <p>To group on multiple criteria, pass a list of the columns or criteria:</p>
<pre><code>df['birthdate'].groupby([df.birthdate.dt.year, df.birthdate.dt.month]).agg('count')
</code></pre>
<p>Example:</p>
<pre><code>In [165]:
df = pd.DataFrame({'birthdate':pd.date_range(start=dt.datetime(2015,12,20),end=dt.datetime(20... | 3 | 2016-08-05T14:52:27Z | [
"python",
"pandas"
] |
How to group and count rows by month and year using Pandas? | 38,792,122 | <p>I have a dataset with personal data such as name, height, weight and date of birth. I would build a graph with the number of people born in a particular month and year. I'm using python pandas to accomplish this and my strategy was to try to group by year and month and add using count. But the closest I got is to ge... | 2 | 2016-08-05T14:49:47Z | 38,792,452 | <p>Another solution is to set <code>birthdate</code> as the index and resample:</p>
<pre><code>import pandas as pd
df = pd.DataFrame({'birthdate': pd.date_range(start='20-12-2015', end='3-1-2016')})
df.set_index('birthdate').resample('MS').size()
</code></pre>
<p>Output:</p>
<pre class="lang-none prettyprint-overri... | 3 | 2016-08-05T15:06:04Z | [
"python",
"pandas"
] |
How to use dateutil.relativedelta in Python 3.x? | 38,792,126 | <p>Hello I am trying to use <code>relativedelta</code> from the <code>dateutil</code> module.</p>
<p>I want to do what is mentioned <a href="http://stackoverflow.com/questions/4130922/how-to-increment-datetime-by-custom-months-in-python-without-using-library">here</a>, add some months to a given <code>datetime</code> ... | 0 | 2016-08-05T14:49:57Z | 38,792,339 | <p>It seems you have to pip-install it like this and it works :</p>
<pre><code>pip install python-dateutil
</code></pre>
| 1 | 2016-08-05T15:00:37Z | [
"python",
"python-3.x",
"datetime",
"python-dateutil"
] |
How to use dateutil.relativedelta in Python 3.x? | 38,792,126 | <p>Hello I am trying to use <code>relativedelta</code> from the <code>dateutil</code> module.</p>
<p>I want to do what is mentioned <a href="http://stackoverflow.com/questions/4130922/how-to-increment-datetime-by-custom-months-in-python-without-using-library">here</a>, add some months to a given <code>datetime</code> ... | 0 | 2016-08-05T14:49:57Z | 38,792,343 | <p>You need to install it first using <code>pip3 install python-dateutil</code>. It's not included by default with Python 3, I don't know where you read that.</p>
<p>I added a <code>pip3</code> and not just plain old <code>pip</code> because that will install it specifically for Python 3.</p>
| 2 | 2016-08-05T15:00:43Z | [
"python",
"python-3.x",
"datetime",
"python-dateutil"
] |
How to use dateutil.relativedelta in Python 3.x? | 38,792,126 | <p>Hello I am trying to use <code>relativedelta</code> from the <code>dateutil</code> module.</p>
<p>I want to do what is mentioned <a href="http://stackoverflow.com/questions/4130922/how-to-increment-datetime-by-custom-months-in-python-without-using-library">here</a>, add some months to a given <code>datetime</code> ... | 0 | 2016-08-05T14:49:57Z | 38,792,344 | <p>Open up your console and type: <code>pip install python-dateutil</code></p>
| 1 | 2016-08-05T15:00:45Z | [
"python",
"python-3.x",
"datetime",
"python-dateutil"
] |
moving a sprite with a function in pygame | 38,792,136 | <p>i am spawning in an enemy using the spawn() class, and in the spawn(0 class, i am trying to use the function move() to move the enemy. when i run the program, the zombie spawns, but doesnt move.</p>
<p>Below is the entire code if anybody was wondering. I am only having problems with the spawn() class and nothing el... | 0 | 2016-08-05T14:50:22Z | 38,792,271 | <p>Instead of this <code>return zombie_x , zombie_y as self.x, self.y</code> why are you not writing this? <code>self.x,self.y = zombie_x,zombie_y</code></p>
<p>Edit: As mentioned by ninMonkey, <code>move</code> is not a function of class <code>spawn</code>. Put it in the class and it should work.</p>
| 0 | 2016-08-05T14:56:58Z | [
"python",
"python-2.7",
"pygame"
] |
moving a sprite with a function in pygame | 38,792,136 | <p>i am spawning in an enemy using the spawn() class, and in the spawn(0 class, i am trying to use the function move() to move the enemy. when i run the program, the zombie spawns, but doesnt move.</p>
<p>Below is the entire code if anybody was wondering. I am only having problems with the spawn() class and nothing el... | 0 | 2016-08-05T14:50:22Z | 38,799,329 | <p>Your code was very hard to read and you should consider the following:</p>
<h2>Divide your code in functions</h2>
<p>As of right now, you have one function that contains almost 300 lines of code. Try divide up the code in small functions that does one thing only. Your first two functions are great! Maybe your even... | 1 | 2016-08-06T00:12:47Z | [
"python",
"python-2.7",
"pygame"
] |
Python: correct location of peaks in a 2D numpy array? | 38,792,263 | <p>I know this question falls within the category of peak detection and <a href="http://stackoverflow.com/questions/3684484/peak-detection-in-a-2d-array">there are answers available</a>, but I think my problem is pretty simplistic and refers to a proof of principle.</p>
<p>Say I generate multiple, <code>nxn</code> 2D ... | 0 | 2016-08-05T14:56:32Z | 38,792,523 | <p>In C/C++ it is considered dangerous to do <code>==</code> with floating point numbers.</p>
<p>If there are no multiple exactly same pikes, you can use <code>numpy.argmax</code>:</p>
<pre><code>a = random.rand(13, 11)
idx_unrolled = argmax(a)
the_peak = a[idx_unrolled/11, idx_unrolled%11]
</code></pre>
<p>If you n... | 2 | 2016-08-05T15:09:43Z | [
"python",
"arrays",
"numpy",
"max",
"detection"
] |
Color coded plot Python | 38,792,273 | <p>I have a color coded plot. Here is a part of the code:</p>
<pre><code>fig = plt.figure(figsize=(10,10))
color_scheme = plt.get_cmap('cool')
gs = gridspec.GridSpec(1, 1)
ax1 = plt.subplot(gs[0])
gs.update(left=0.15,bottom=0.15,right=0.80,top=0.95)
cax = fig.add_axes([0.80, 0.15, 0.03, 0.80])
im = ax1.scatter(x, y, ... | 1 | 2016-08-05T14:57:07Z | 38,792,417 | <p>Instead of using</p>
<pre><code>ax1.scatter(x, y, ...)
</code></pre>
<p>use</p>
<pre><code>ax1.plot(x, y, 'o-', ...) # three dots meaning you can configure markers, linestyle, etc.
</code></pre>
<p>This works bacause of <code>'o-'</code> argument, which is a line plot with markers at every data point.</p>
| 2 | 2016-08-05T15:04:26Z | [
"python",
"matplotlib"
] |
Color coded plot Python | 38,792,273 | <p>I have a color coded plot. Here is a part of the code:</p>
<pre><code>fig = plt.figure(figsize=(10,10))
color_scheme = plt.get_cmap('cool')
gs = gridspec.GridSpec(1, 1)
ax1 = plt.subplot(gs[0])
gs.update(left=0.15,bottom=0.15,right=0.80,top=0.95)
cax = fig.add_axes([0.80, 0.15, 0.03, 0.80])
im = ax1.scatter(x, y, ... | 1 | 2016-08-05T14:57:07Z | 38,792,457 | <p>Plot the same x and y-data separately with a standard <code>ax.plot</code> behind your scatter plot. </p>
<pre><code>ax1.plot(x, y, '-')
im = ax1.scatter(x, y, c=z, edgecolors='black', marker='.', s=40, lw=1, cmap=color_scheme, vmin=0, vmax=10)
</code></pre>
<p>This should give you your cmapped scatter plot with t... | 1 | 2016-08-05T15:06:22Z | [
"python",
"matplotlib"
] |
Can you use the same decoder in Pocketsphinx for multiple files? | 38,792,429 | <p>Is it possible to use the same decoder for multiple wav files in Pocketsphinx (Python)? I have the following code snippet, which is very standard, except that I call the decoder twice on the same file. The outputs are not the same, however. I've also tried using the decoder twice on different files, and the outputs ... | 2 | 2016-08-05T15:05:05Z | 38,797,212 | <blockquote>
<p>Is it possible to use the same decoder for multiple wav files in Pocketsphinx (Python)?</p>
</blockquote>
<p>Yes</p>
<blockquote>
<p>I have the following code snippet, which is very standard, except that I call the decoder twice on the same file. The outputs are not the same, however.</p>
</blockq... | 0 | 2016-08-05T20:18:28Z | [
"python",
"pocketsphinx"
] |
Cross-platform Python Executables | 38,792,459 | <p>Is it possible to package together a Python executable that can be run across any platform - provided the correct version of Python is installed?</p>
<p>If, for example, I created a Web Scraping script which included files such as chromium webdriver, the selenium package and other non-builtin Python packages, could... | 0 | 2016-08-05T15:06:22Z | 38,792,824 | <p>Python is mainly cross platform - although I've had experience of reading/writing files being different on Windows/OS X/Linux because of the different directory and file structure (see <a href="https://automatetheboringstuff.com/chapter8/" rel="nofollow">Reading and Writing Files</a> for how to cope with that). Cros... | 0 | 2016-08-05T15:26:27Z | [
"python",
"selenium",
"executable"
] |
environment variable in ubuntu | 38,792,545 | <p>I'm trying to install the python module 'Pycpx' but I'm getting an error that it can't find an environment variable </p>
<p><a href="http://www.stat.washington.edu/~hoytak/code/pycpx/download.html" rel="nofollow">Pycpx</a></p>
<blockquote>
<p>Exception: CPLEX concert include directory not found: please set
en... | 0 | 2016-08-05T15:10:46Z | 38,792,615 | <p>No, that's not right. You can't have those spaces around the <code>=</code> sign, and you should <code>export</code> the variable, like this: </p>
<pre><code>export CPLEX_PATH=/home/joe/concert/include/ilconcert
</code></pre>
| 1 | 2016-08-05T15:14:22Z | [
"python",
"bash",
"environment-variables",
"ubuntu-14.04"
] |
environment variable in ubuntu | 38,792,545 | <p>I'm trying to install the python module 'Pycpx' but I'm getting an error that it can't find an environment variable </p>
<p><a href="http://www.stat.washington.edu/~hoytak/code/pycpx/download.html" rel="nofollow">Pycpx</a></p>
<blockquote>
<p>Exception: CPLEX concert include directory not found: please set
en... | 0 | 2016-08-05T15:10:46Z | 38,792,652 | <p>The correct way of doing it is as follows:</p>
<pre><code>export CPLEX_PATH=/home/joe/concert/include/ilconcert
</code></pre>
| 3 | 2016-08-05T15:16:06Z | [
"python",
"bash",
"environment-variables",
"ubuntu-14.04"
] |
figtext datetime function matplotlib | 38,792,564 | <p>I am trying to create a text box within my graph in matplotlib where it gives me the date in which the graph was created. </p>
<p>I have created a text box in the bottom right corner of my graph using the figtext function in matplotlib, but cannot figure out how to incorporate the python datetime function within th... | 1 | 2016-08-05T15:12:11Z | 38,792,660 | <p>Here's an example with today's date:</p>
<pre><code>import datetime as dt
plt.figtext(0, 0,"Data as of {}".format(dt.date.today().strftime('%Y-%m-%d')), wrap=False,
horizontalalignment='left',verticalalignment ='bottom', fontsize=8)
</code></pre>
| 0 | 2016-08-05T15:16:31Z | [
"python",
"datetime",
"matplotlib"
] |
figtext datetime function matplotlib | 38,792,564 | <p>I am trying to create a text box within my graph in matplotlib where it gives me the date in which the graph was created. </p>
<p>I have created a text box in the bottom right corner of my graph using the figtext function in matplotlib, but cannot figure out how to incorporate the python datetime function within th... | 1 | 2016-08-05T15:12:11Z | 38,792,665 | <p>If you have a <code>datetime</code> object, you can use the <a href="https://docs.python.org/2/library/datetime.html#datetime.date.strftime" rel="nofollow"><code>strftime</code></a> method to convert it to a string representation using the formatting you want:</p>
<pre><code>from datetime import datetime
plt.figtex... | 0 | 2016-08-05T15:16:38Z | [
"python",
"datetime",
"matplotlib"
] |
Dynamically generate constraints list in CVXPY | 38,792,618 | <p>I am working on a minimum variance optimisation in python using CVXPY that takes in constraints in the form of</p>
<pre><code>constraints = [
sum_entries(w) == 1,
w[0:5] >0.05,
w[1] > 0.05,
w[6] == 0,
sum_entries(w[country_mappin... | 0 | 2016-08-05T15:14:40Z | 38,795,858 | <p>Ok so i have found a solution that works.</p>
<p>One can read in the constraints and concatenate a string to get s.th like</p>
<pre><code>'constraints = [sum_entries(w) == 1,w[0:5] > 0.05,w[1] > 0.05,
w[6] == 0, sum_entries(w[country_mappings['France']]) == 0.39,
w >= 0, w[country_mappings['Fr... | 0 | 2016-08-05T18:39:57Z | [
"python",
"optimization",
"constraint-programming",
"quadratic-programming"
] |
Pandas: Multi-index second-level slicing by integer | 38,792,647 | <p>I have a multi-index dataframe that look like this:</p>
<pre><code>In [45]: df
Out[45]:
Last Days to expiry
Date Ticker
1988-06-23 COU88 15.65 48 days
COV88 15.65 78 days
1988-06-24 COU88 15.65 47 days
COV88 15.... | 3 | 2016-08-05T15:15:51Z | 38,792,821 | <p>You can <code>groupby</code> on the first index level and call <code>first</code>:</p>
<pre><code>In [173]:
df.groupby(level='Date').first()
Out[173]:
Last Days to expiry
Date
1988-06-23 15.65 48 days
1988-06-24 15.65 47 days
1988-06-27 15.10 44 days... | 3 | 2016-08-05T15:26:08Z | [
"python",
"pandas",
"group-by",
"multi-index"
] |
How to Update Scrollbar Position with Tkinter | 38,792,704 | <p>I am trying to create a GUI for a python script using Tkinter, and have a working scrollbar. However, the position of the 'bar' does not update when I scroll or drag the bar. I think the relevant portion of code is as follows:</p>
<pre><code>#Setup window with text and scrollbar
root = Tk()
scrollbar = Scrol... | 0 | 2016-08-05T15:18:49Z | 38,792,777 | <p>You should point it to the .yview of a Canvas, and put the Text into the canvas</p>
<pre><code>the_window = Tk()
vscrollbar = Scrollbar(the_window)
vscrollbar.grid(...)
the_canvas = Canvas(
the_window,
background = 'white',
yscrollcommand = vscrollbar.set
)
the_canvas.grid(...)
vscrollbar.config(comm... | 2 | 2016-08-05T15:23:44Z | [
"python",
"tkinter",
"scrollbar"
] |
Flask Foreign Key Constraint | 38,792,722 | <p>I have an issue with foreign key in Flask.
My model is the following : </p>
<p><strong>Model.py</strong></p>
<pre><code>class User(db.Model):
__tablename__ = "users"
__table_args__ = {'extend_existing': True}
user_id = db.Column(db.BigInteger, primary_key=True)
# EDIT
alerts = db.relationship(... | 0 | 2016-08-05T15:20:11Z | 38,793,154 | <p>There is mistake in your code for initialisation of Alert class. You should use backref variable (which is 'user') instead of user_id while initializing Alert. Following code should work. </p>
<pre><code>class User(db.Model):
__tablename__ = "user"
__table_args__ = {'extend_existing': True}
user_id = d... | 0 | 2016-08-05T15:44:55Z | [
"python",
"flash",
"flask-sqlalchemy",
"foreign-key-relationship"
] |
Flask Foreign Key Constraint | 38,792,722 | <p>I have an issue with foreign key in Flask.
My model is the following : </p>
<p><strong>Model.py</strong></p>
<pre><code>class User(db.Model):
__tablename__ = "users"
__table_args__ = {'extend_existing': True}
user_id = db.Column(db.BigInteger, primary_key=True)
# EDIT
alerts = db.relationship(... | 0 | 2016-08-05T15:20:11Z | 38,797,940 | <p>If you are using SQLite, foreign key constraints are by default not enforced. See <a href="https://www.sqlite.org/foreignkeys.html#fk_enable" rel="nofollow">Enabling Foreign Key Support</a> in the documentation for how to enable this. </p>
| 0 | 2016-08-05T21:22:30Z | [
"python",
"flash",
"flask-sqlalchemy",
"foreign-key-relationship"
] |
Flask Foreign Key Constraint | 38,792,722 | <p>I have an issue with foreign key in Flask.
My model is the following : </p>
<p><strong>Model.py</strong></p>
<pre><code>class User(db.Model):
__tablename__ = "users"
__table_args__ = {'extend_existing': True}
user_id = db.Column(db.BigInteger, primary_key=True)
# EDIT
alerts = db.relationship(... | 0 | 2016-08-05T15:20:11Z | 38,826,981 | <p>So I find how to do it with <a href="http://stackoverflow.com/questions/2614984/sqlite-sqlalchemy-how-to-enforce-foreign-keys">this stackoverflow question </a>, I find how to force foreign Key Constraint.</p>
<p>I juste add this in <code>__init__.py</code> and change nothing to <code>models.py</code></p>
<pre><c... | 0 | 2016-08-08T10:34:25Z | [
"python",
"flash",
"flask-sqlalchemy",
"foreign-key-relationship"
] |
How would I modify/add text to a tkinter.Label? | 38,792,787 | <p>I am in the process of learning basic Python. I am currently attempting to create a simple calculator program that only has addition and subtraction. I have one issue though. I am not sure how I would add text to my Python label upon button press. Right now, upon pressing the '1' button, my program will change the d... | 3 | 2016-08-05T15:24:14Z | 38,792,942 | <p>Is this what you're looking for:</p>
<pre><code>from tkinter import *
root = Tk()
var = StringVar()
def f1():
var.set(" ")
var.set("1")
def f2():
var.set(" ")
var.set("2")
label = Label(root, textvariable=var)
label.pack()
button1 = Button(root, text="One", command=f1)
button1.pack()
button2 =... | 0 | 2016-08-05T15:32:39Z | [
"python",
"user-interface",
"tkinter",
"calculator"
] |
How would I modify/add text to a tkinter.Label? | 38,792,787 | <p>I am in the process of learning basic Python. I am currently attempting to create a simple calculator program that only has addition and subtraction. I have one issue though. I am not sure how I would add text to my Python label upon button press. Right now, upon pressing the '1' button, my program will change the d... | 3 | 2016-08-05T15:24:14Z | 38,792,997 | <p>You should use a StringVar for this. And your callback needs to get the current contents of the StringVar, modify it, and use the modified string to set the new value of the StringVar. Like this:</p>
<pre><code>import tkinter as tk
window = tk.Tk()
# Creating main label
display_text = tk.StringVar()
display = tk.... | 2 | 2016-08-05T15:35:24Z | [
"python",
"user-interface",
"tkinter",
"calculator"
] |
How would I modify/add text to a tkinter.Label? | 38,792,787 | <p>I am in the process of learning basic Python. I am currently attempting to create a simple calculator program that only has addition and subtraction. I have one issue though. I am not sure how I would add text to my Python label upon button press. Right now, upon pressing the '1' button, my program will change the d... | 3 | 2016-08-05T15:24:14Z | 38,793,337 | <p>You can define <code>add_one</code> like the following, to first get the existing value and then append a new value to it:</p>
<pre><code>def add_one():
current_value = display.cget("text")
new_value = current_value + "1"
display.config(text=new_value)
</code></pre>
| 1 | 2016-08-05T15:55:10Z | [
"python",
"user-interface",
"tkinter",
"calculator"
] |
matplotlib and engineering notation | 38,792,849 | <p>I'm using matplotlib to iterate a bunch of measurements over telnet...I set up the measurement with telnetlib and then read in the data, and set it up to be plotted. The problem is, I want it in engineering notation (exponents to multiples of three, so, kilo, mega, giga, etc.). However, I cannot make this work...P... | 0 | 2016-08-05T15:27:53Z | 38,793,077 | <p>One way is to get the tick-values and then format them and set the new formatted ones as labels. Look <a href="http://stackoverflow.com/questions/17973278/python-decimal-engineering-notation-for-mili-10e-3-and-micro-10e-6">here</a> for an example of the formatting. Sample code might be</p>
<pre><code>xticks = ax.ge... | 0 | 2016-08-05T15:40:32Z | [
"python",
"matplotlib"
] |
For two lists, l1 and l2, how to check that for all e1 â l1, âp(e1,e2) where e2 is some element in l2, efficiently in python? | 38,793,001 | <p>Ok, not sure if that was the best title, but I have two python lists. L1 and L2 which both have elements of type T and do not have the same length.</p>
<p>I have a function p(T,T) which is a predicate checking a property about two elements of type T.</p>
<p>I would like to check that for all elements e in L1, p(e,... | 0 | 2016-08-05T15:35:43Z | 38,793,368 | <p>The fact that <code>p</code> is symmetric is essentially useless. It's true that if you know <code>p(e, e')</code> holds, you know <code>p(e', e)</code> holds, but unless <code>e</code> and <code>e'</code> are both in both lists, you only get to make use of your predicate evaluation once instead of twice. Even if th... | 2 | 2016-08-05T15:56:33Z | [
"python",
"algorithm",
"list",
"iterator",
"traversal"
] |
For two lists, l1 and l2, how to check that for all e1 â l1, âp(e1,e2) where e2 is some element in l2, efficiently in python? | 38,793,001 | <p>Ok, not sure if that was the best title, but I have two python lists. L1 and L2 which both have elements of type T and do not have the same length.</p>
<p>I have a function p(T,T) which is a predicate checking a property about two elements of type T.</p>
<p>I would like to check that for all elements e in L1, p(e,... | 0 | 2016-08-05T15:35:43Z | 38,793,437 | <p>I would just create a dictionary for each list (could be <code>dict1</code> and <code>dict2</code>), and when you iterate through the first list, you set both <code>dict1[e] = e'</code> and <code>dict2[e'] = e</code>. Then, when iterating through <code>L2</code>, you just check first that the current <code>e</code> ... | 0 | 2016-08-05T15:59:36Z | [
"python",
"algorithm",
"list",
"iterator",
"traversal"
] |
replacing lines in file | 38,793,047 | <p>I have a file that looks like this (columns ar coordinates x,y,z and lines represents some objects):</p>
<pre><code> 1.02 0.63 0.0003
-1.34 0.61 0.0002
0.0 0.0 0.0
-1.91 0.25 0.87
-1.32 1.70 0.0
0.02 -1.12 -0.06
</code></pre>
<p>I want to: </p>
<p>1)... | 0 | 2016-08-05T15:38:25Z | 38,795,489 | <p>If you have to use numpy, here is an example you can work on:
load the whole data as a numpy array "ao"</p>
<pre><code> old2 = ao[1,:]
new2 = ao[1,:]*3
diff = new2 - old2
ao[1,:] = new2
ao[3:,:] = ao[3:,:] + diff
</code></pre>
| 0 | 2016-08-05T18:11:18Z | [
"python",
"arrays",
"replace",
"lines"
] |
I am trying to sort list of all the files in a folder on basis of modification date | 38,793,106 | <p>I am a beginner and trying to write code to display files in a folder on basis of their modification date in ascending order.</p>
<p>I tried below code but i want to know how can i proceed to sort it.</p>
<pre><code>import os
file_path = "c:\\albert\\david"
file1 = os.listdir(file_path)
file2 = [os.path.join(fi... | 3 | 2016-08-05T15:42:15Z | 38,796,386 | <p>Change the lines after your <code>print(file2)</code> line, for a list comprehension similar to the one you used to form the <code>file2</code>:</p>
<pre><code>file3 = [(f, os.path.getmtime(f), s.path.getsize(f)) for f in file2]
</code></pre>
<p>Now you only need to sort it on the second element of the tuple (the ... | 1 | 2016-08-05T19:17:45Z | [
"python",
"sorting"
] |
Can a python program configure logging before running the rest of code? | 38,793,237 | <p><strong>NOTE</strong>: This question was based on an assumption that Python emits its error messages via logging. The answers show that the assumption is wrong.</p>
<hr>
<p>I'm developing a program that is not started from a command line, but by a daemon. Stderr is redirected to null device.</p>
<p>Normally it lo... | 0 | 2016-08-05T15:49:23Z | 38,793,621 | <p>You could use:</p>
<pre><code>if __name__ == '__main__':
logger.info("program start")
try:
real_start()
except Exception:
# This will log the traceback.
logger.exception("An error ocurred.")
</code></pre>
<p>However, you should increase your logger level to, at least, <code>logg... | 1 | 2016-08-05T16:10:35Z | [
"python",
"logging"
] |
Can a python program configure logging before running the rest of code? | 38,793,237 | <p><strong>NOTE</strong>: This question was based on an assumption that Python emits its error messages via logging. The answers show that the assumption is wrong.</p>
<hr>
<p>I'm developing a program that is not started from a command line, but by a daemon. Stderr is redirected to null device.</p>
<p>Normally it lo... | 0 | 2016-08-05T15:49:23Z | 38,793,808 | <p>You are not passing your exception to your logger, so there is no way for it to write it. </p>
<p>inside your <code>real_start()</code>, put your import statement and your function call in a try, catch and then log the exception.</p>
<p>Lets say for example your <code>realprog.main()</code> divides a number by zer... | 1 | 2016-08-05T16:22:01Z | [
"python",
"logging"
] |
NoReverseMatch following v1.9 to v1.10 upgrade | 38,793,258 | <p>I've just upgraded to django v1.10 and I'm running through tests to check everything works fine but I've getting <code>Reverse for 'django.contrib.auth.views.login' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: []</code> on my login page.</p>
<p>I'm using django-registration and have... | 2 | 2016-08-05T15:50:45Z | 38,793,513 | <p>From <a href="https://docs.djangoproject.com/en/stable/releases/1.10/#features-removed-in-1-10" rel="nofollow">Django 1.10 release notes</a>:</p>
<blockquote>
<p>The ability to <strong>reverse()</strong> URLs using a dotted Python path is removed.</p>
</blockquote>
<p>The <code>url</code> template tag uses <code... | 1 | 2016-08-05T16:03:05Z | [
"python",
"django"
] |
Python 3.5: I am getting an error: "NameError: name 'multiprocessing' is not defined" | 38,793,278 | <p>I am getting an error: </p>
<pre><code> pool = multiprocessing.Pool(5)
NameError: name 'multiprocessing' is not defined
</code></pre>
<p>So, how to fix it ? Thank you very much :)</p>
<pre><code>from multiprocessing import Pool
from selenium.common.exceptions import TimeoutException
from bs4 import BeautifulS... | 0 | 2016-08-05T15:51:53Z | 38,793,313 | <p>You are importing <code>Pool</code>, not <code>multiprocessing</code>.</p>
<p>Replace <code>from multiprocessing import Pool</code> with <code>import multiprocessing</code></p>
| 0 | 2016-08-05T15:54:05Z | [
"python",
"facebook",
"multiprocessing"
] |
Python 3.5: I am getting an error: "NameError: name 'multiprocessing' is not defined" | 38,793,278 | <p>I am getting an error: </p>
<pre><code> pool = multiprocessing.Pool(5)
NameError: name 'multiprocessing' is not defined
</code></pre>
<p>So, how to fix it ? Thank you very much :)</p>
<pre><code>from multiprocessing import Pool
from selenium.common.exceptions import TimeoutException
from bs4 import BeautifulS... | 0 | 2016-08-05T15:51:53Z | 38,793,318 | <p>You haven't declared what <em>multiprocessing</em> is. You haven't imported the module either, you just imported <em>Pool</em> from <em>multiprocessing</em>. In other words, multiprocessing is not in your namespace, hence NameError. Try import the whole module and it should work.</p>
<pre><code>import multiprocessi... | 0 | 2016-08-05T15:54:19Z | [
"python",
"facebook",
"multiprocessing"
] |
Python 3.5: I am getting an error: "NameError: name 'multiprocessing' is not defined" | 38,793,278 | <p>I am getting an error: </p>
<pre><code> pool = multiprocessing.Pool(5)
NameError: name 'multiprocessing' is not defined
</code></pre>
<p>So, how to fix it ? Thank you very much :)</p>
<pre><code>from multiprocessing import Pool
from selenium.common.exceptions import TimeoutException
from bs4 import BeautifulS... | 0 | 2016-08-05T15:51:53Z | 38,793,435 | <p>You have already <code>import Pool</code> from <code>multiprocessing</code>. So you need to replace the line</p>
<pre><code>pool = multiprocessing.Pool(5)
</code></pre>
<p>by</p>
<pre><code>pool = Pool(5)
</code></pre>
| 0 | 2016-08-05T15:59:32Z | [
"python",
"facebook",
"multiprocessing"
] |
What is the unit of height variable in "barh" of matplotlib? | 38,793,456 | <p>In the definition of the function barh of matplotlib:</p>
<p><code>matplotlib.pyplot.barh(bottom, width, height=0.8, left=None, hold=None, **kwargs)</code></p>
<p>The default "height" is 0.8, but when I draw some figures with different Figure's height for example (30, 40,..) and dpi=100. I see the Bar's height is ... | 3 | 2016-08-05T16:00:29Z | 38,797,802 | <p>I'll split this into two parts:</p>
<blockquote>
<p>I wonder what is the unit of the height in barh</p>
</blockquote>
<p>(Apparently people have been wondering this <a href="https://sourceforge.net/p/matplotlib/mailman/message/23874862/" rel="nofollow">since 2009</a>... so I guess you're in good company!)</p>
<... | 1 | 2016-08-05T21:09:39Z | [
"python",
"matplotlib"
] |
Django Celery Received unregistered task of type 'appname.tasks.add' | 38,793,547 | <p>Following the documentation and the Demo Django project here <a href="https://github.com/celery/celery/tree/3.1/examples/django" rel="nofollow">https://github.com/celery/celery/tree/3.1/examples/django</a></p>
<p><strong>Project Structure</strong></p>
<pre><code>piesup2
|
piesup2
| |__init__.py
| ... | 0 | 2016-08-05T16:06:17Z | 38,836,969 | <p>In your django settings you need to add each module that has a celery task to CELERY_IMPORTS</p>
<pre><code>CELERY_IMPORTS = (
'reports.tasks',
'some_app.some_module',
)
</code></pre>
| 2 | 2016-08-08T19:20:35Z | [
"python",
"django",
"celery"
] |
python module names with same name as existing modules | 38,793,579 | <p>I have a number of small utils modules that i organize under a 'msa' namespace so I can use in a number of different research projects. Currently I have them organized like this:</p>
<pre><code># folder structure:
packages <-- in my pythonpath
--msa
----msa_utils.py
----msa_geom.py
----msa_pyglet.py
----msa_mat... | 0 | 2016-08-05T16:07:34Z | 38,793,613 | <p>In Python 2, imports in packages without a package qualifier indeed first look for <em>package local</em> modules.</p>
<p>Thus, <code>import pyglet</code> will find <code>msa.pyglet</code> before the top-level <code>pyglet</code> is considered.</p>
<p>Switch to absolute imports to make the Python 3 behaviour the d... | 2 | 2016-08-05T16:10:06Z | [
"python",
"module"
] |
What happens when an exception occurs in a module initialization | 38,793,581 | <p>I have a module, and in this module I initialize some variables as soon as the module is imported.</p>
<p>my_mobule.py:</p>
<pre><code>def _build_service():
# ...do some stuffs
_service = _build_service()
</code></pre>
<p>In this case, what will happen if the <code>_build_service</code> method raises an exce... | 1 | 2016-08-05T16:07:37Z | 38,793,648 | <p>It's pretty similar to the behaviour should you call a function which raises an exception - if you don't handle the exception in the module itself, then it will be simply bump up the stack to whoever imported your module. </p>
<p>That would look like this:</p>
<pre><code>>>> import my_mobule # sic
UhohE... | 1 | 2016-08-05T16:11:47Z | [
"python",
"python-2.7",
"python-module"
] |
Create Gtk3 Treeview with CellRendererToggle and Names from List with Python | 38,793,605 | <p>I try to create a Gtk.TreeView with header names from a list. Because I want to use it to show entries from different databases later.</p>
<p>The problem:
When I click on a cell and try to activate it all cells in the row getting activated. More strange, they look not activated, only if I move the cursor over them ... | 1 | 2016-08-05T16:09:36Z | 38,854,444 | <p>The concept of 'selecting a cell' is not really implemented in a <code>GtkTreeView</code>. If you look over all the functions available for TreeView, very few of them really addresses single cells.</p>
<p>That leaves you with these options: </p>
<ol>
<li><p>Implement your own 'single cell' highlighting (such as ad... | 0 | 2016-08-09T15:09:34Z | [
"python",
"gtk3"
] |
Create Gtk3 Treeview with CellRendererToggle and Names from List with Python | 38,793,605 | <p>I try to create a Gtk.TreeView with header names from a list. Because I want to use it to show entries from different databases later.</p>
<p>The problem:
When I click on a cell and try to activate it all cells in the row getting activated. More strange, they look not activated, only if I move the cursor over them ... | 1 | 2016-08-05T16:09:36Z | 38,955,150 | <p>TreeViewColumn needs an attribute for "active" with the position in the store:</p>
<pre><code>column.add_attribute(cell, "active", n)
</code></pre>
<p>And I also had to change the underlying store and not the widget:</p>
<pre><code>self.myliststore[path][column] = not self.myliststore[path][column]
</code></pre>
... | 1 | 2016-08-15T12:31:45Z | [
"python",
"gtk3"
] |
Python lru_cache usage optimization | 38,793,633 | <p>Say I have this method that I cache using <a href="https://docs.python.org/3/library/functools.html" rel="nofollow"><code>lru_cache</code></a>:</p>
<pre><code>@lru_cache(maxsize=8)
def very_expensive_call(number):
# do something that's very expensive
return number
</code></pre>
<p>I am calling this method ... | 0 | 2016-08-05T16:11:18Z | 38,795,337 | <p>No, no, the <code>cache</code> used in <code>lru</code> is specifically designed to not be public-facing. All its internals <a href="https://hg.python.org/cpython/file/3.5/Lib/functools.py#l411" rel="nofollow"><em>are encapsulated</em></a> for thread safety and in order to not break code if the implementation change... | 1 | 2016-08-05T18:00:45Z | [
"python",
"python-3.x",
"caching",
"optimization"
] |
How do I silence output to stdout in rpy2? | 38,793,688 | <p>I have an R function that I call from my Python script using rpy2. The R function prints to stdout; is there a parameter in rpy2 that silences stdout when an R script is called?</p>
| 0 | 2016-08-05T16:14:38Z | 38,798,986 | <p>rpy2 lets you redefine R's own interaction with a terminal as python function.</p>
<p>The following example from the documentation shows how to append output
to <code>stdout</code> to a Python list (limited usefulness in the grand scheme of things, but it makes a simple examples of the feature):</p>
<pre><code>buf... | 0 | 2016-08-05T23:20:41Z | [
"python",
"rpy2"
] |
Python sort a list of objects/dictionaries with a given sortKey function | 38,793,694 | <p>(I use Python 2 here)</p>
<p>I have a list of dictionaries, say</p>
<pre><code>dei = [{'name': u'Thor'}, {'name': u'Ådipus'}, {'name': u'Creon'}]
</code></pre>
<p>I would like to sort that list by their <code>'name'</code> attribute. This is easily done so:</p>
<pre><code>dei.sort(key=lambda d: d['name'])
</cod... | 3 | 2016-08-05T16:15:01Z | 38,794,186 | <p>You can use your own key that internally calls <code>getSortKey</code> with correct value:</p>
<pre><code>>>> import icu
>>> dei = [{'name': u'Thor'}, {'name': u'Ådipus'}, {'name': u'Creon'}]
>>> collator = icu.Collator.createInstance()
>>> dei.sort(key=lambda x: collator.getSor... | 0 | 2016-08-05T16:47:34Z | [
"python",
"sorting",
"dictionary",
"pyicu"
] |
Numpy std calculation: TypeError: cannot perform reduce with flexible type | 38,793,713 | <p>I am trying to read lines of numbers starting at line 7 and compiling the numbers into a list until there is no more data, then calculate standard deviation and %rms on this list. Seems straightforward but I keep getting the error:</p>
<pre><code>Traceback (most recent call last):
File "rmscalc.py", line 21, in &... | 0 | 2016-08-05T16:16:03Z | 38,794,051 | <p><code>values</code> is a string array and so is <code>a</code>. Convert <code>a</code> into a numeric type using <code>astype</code>. For example,</p>
<pre><code>a = np.asarray(values).astype(np.float32)
std = np.std(a)
</code></pre>
| 1 | 2016-08-05T16:37:57Z | [
"python",
"error-handling"
] |
Distributed Tensorflow: ValueError âWhen: When using replicas, all Variables must have their device setâ set: name: "Variable" | 38,793,718 | <p>I am trying to write a distributed variational auto encoder on tensorflow in <code>standalone mode</code>.</p>
<p>My cluster includes 3 machines, naming m1, m2 and m3. I am trying to run 1 ps server on m1, and 2 worker servers on m2 and m3. (Example trainer program in <a href="https://www.tensorflow.org/versions/r0... | 2 | 2016-08-05T16:16:12Z | 38,794,027 | <p>The problem stems from the definition of your <code>global_step</code> variable:</p>
<pre><code>global_step = tf.Variable(0)
</code></pre>
<p>This definition is outside the scope of the <code>with tf.device(tf.train.replica_device_setter(...)):</code> block above, so no device is assigned to <code>global_step</cod... | 1 | 2016-08-05T16:36:22Z | [
"python",
"tensorflow"
] |
Remove numbers conditionally? | 38,793,863 | <p>I'm sorry if the title isn't very descriptive. I don't exactly know how to sum up my problem in a few words.</p>
<p>Here's my issue. I'm cleaning addresses and some of them are causing some issues.</p>
<p>I have a list of delimiters (avenue, street, road, place, etc etc etc) named <code>patterns</code>.</p>
<p>Le... | 1 | 2016-08-05T16:25:54Z | 38,794,269 | <p>Your description of what you want to do isn't very clear, but if I understand correctly you want to is to delete the first occurrence of a number sequence?</p>
<p>You could do this without using a <em>regex</em>,</p>
<pre><code>s = 'SUITE 1603 200 PARK AVENUE SOUTH NEW YORK'
l = s.split(' ')
for i, w in enumerate(... | 1 | 2016-08-05T16:52:59Z | [
"python"
] |
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