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 |
|---|---|---|---|---|---|---|---|---|---|
using newaxis in Python | 39,157,426 | <pre><code>A = np.array([[ 1, 2, 3],
[ 4, 5, 6],
[ 7, 8, 9],
[10,11,12]])
B = A[:, np.newaxis]
print(B)
print(B.shape)
</code></pre>
<p>the output is</p>
<pre><code>[[[ 1 2 3]]
[[ 4 5 6]]
[[ 7 8 9]]
[[10 11 12]]]
(4L, 1L, 3L)
</code></pre>
<p>I have two questions... | 0 | 2016-08-26T02:22:59Z | 39,157,603 | <p>The "extra" bracket and the 1L are there for the same reason: your use of <code>np.newaxis</code> inserted a new dimension of extent 1 into the array shapeâin other words, you transformed a two-dimensional 4x3 array into a three-dimensional 4x1x3 array. </p>
<p>Each of the 4 "rows" of <code>B</code>contains a tw... | 0 | 2016-08-26T02:49:24Z | [
"python",
"arrays",
"numpy",
"matrix"
] |
How to set empty value to DateField in django model? | 39,157,455 | <p>What am I doing wrong here? I need to set empty value to doing_field. </p>
<pre><code>def delete_todo_today(request):
if request.is_ajax() and request.POST and request.user.is_authenticated:
thingtodo = ThingToDo.objects.filter(author = request.user, thing = request.POST.get('item'))
thingtodo.d... | 0 | 2016-08-26T02:27:36Z | 39,157,721 | <p>by default <code>models.DateField.empty_strings_allowed</code> is set to <code>False</code>,
<a href="https://docs.djangoproject.com/en/1.10/_modules/django/db/models/fields/#DateField" rel="nofollow">https://docs.djangoproject.com/en/1.10/_modules/django/db/models/fields/#DateField</a></p>
<p>try defining <code>Th... | 0 | 2016-08-26T03:06:44Z | [
"python",
"django"
] |
How to set empty value to DateField in django model? | 39,157,455 | <p>What am I doing wrong here? I need to set empty value to doing_field. </p>
<pre><code>def delete_todo_today(request):
if request.is_ajax() and request.POST and request.user.is_authenticated:
thingtodo = ThingToDo.objects.filter(author = request.user, thing = request.POST.get('item'))
thingtodo.d... | 0 | 2016-08-26T02:27:36Z | 39,157,795 | <p>You are using <code>.filter()</code> to get the objects for <code>thingtodo</code>. This will return a QuerySet or simply said a list of objects. You can not set an attribute on multiple objects directly. </p>
<p>If you wat to retrieve one object only, use <code>get()</code> instead of <code>.filter()</code>. This ... | 2 | 2016-08-26T03:17:40Z | [
"python",
"django"
] |
Simplest example for streaming audio with Alexa | 39,157,599 | <p>I'm trying to get the new streaming audio API going. Is the following response valid? I'm getting a "there was a problem with the skill" error when I test it on my device. </p>
<p>Here is the code for my AWS-lambda function:</p>
<pre><code>def lambda_handler(event, context):
return {
"response": {
... | 7 | 2016-08-26T02:49:19Z | 39,283,692 | <p>The following code worked for me:</p>
<pre><code>def lambda_handler(event, context):
return {
"response": {
"directives": [
{
"type": "AudioPlayer.Play",
"playBehavior": "REPLACE_ALL",
"audioItem": {
... | 7 | 2016-09-02T03:03:11Z | [
"python",
"aws-lambda",
"alexa-skills-kit"
] |
Sorting based on max length and max sum | 39,157,890 | <p>Can you please help me figure this out</p>
<pre><code>q = [[12, 13, 14], [8, 9, 10,11], [2, 3, 4], [5, 6, 7]]
</code></pre>
<p>suppose I've a list like q, How do I sort the based on </p>
<ol>
<li>Max length of sublists and </li>
<li>Max sum of the sublists</li>
</ol>
<p>The output should be:</p>
<pre><code>q =... | 1 | 2016-08-26T03:31:21Z | 39,157,907 | <p>Supply your criteria in a lambda function for the <code>key</code>:</p>
<pre><code>sorted(q, key=lambda sub: (len(sub), sum(sub)), reverse=True)
>>> [[8, 9, 10, 11], [12, 13, 14], [5, 6, 7], [2, 3, 4]]
</code></pre>
<p>The <code>lambda</code> function will take every sub-list <code>x</code> and sort it ba... | 5 | 2016-08-26T03:34:27Z | [
"python",
"list",
"sorting"
] |
Sorting based on max length and max sum | 39,157,890 | <p>Can you please help me figure this out</p>
<pre><code>q = [[12, 13, 14], [8, 9, 10,11], [2, 3, 4], [5, 6, 7]]
</code></pre>
<p>suppose I've a list like q, How do I sort the based on </p>
<ol>
<li>Max length of sublists and </li>
<li>Max sum of the sublists</li>
</ol>
<p>The output should be:</p>
<pre><code>q =... | 1 | 2016-08-26T03:31:21Z | 39,157,940 | <p>Try:</p>
<pre><code>sorted(q, lambda a,b: len(b)-len(a) or sum(b)-sum(a))
</code></pre>
| 3 | 2016-08-26T03:39:50Z | [
"python",
"list",
"sorting"
] |
Python retrieving value from URL | 39,157,895 | <p>I'm trying to write a python script that checks money.rediff.com for a particular stock price and prints it. I know that this can be done easily with their API, but I want to learn how urllib2 works, so I'm trying to do this the old fashioned way. But, I'm stuck on how to use the urllib. Many tutorials online asked ... | 5 | 2016-08-26T03:32:27Z | 39,157,965 | <p>You can certainly do this with just <code>urllib2</code> and perhaps a regular expression, but I'd encourage you to use better tools, namely <a href="http://docs.python-requests.org/en/master/" rel="nofollow"><code>requests</code></a> and <a href="https://www.crummy.com/software/BeautifulSoup/bs4/doc/" rel="nofollow... | 2 | 2016-08-26T03:43:28Z | [
"python",
"html",
"urllib2"
] |
Python retrieving value from URL | 39,157,895 | <p>I'm trying to write a python script that checks money.rediff.com for a particular stock price and prints it. I know that this can be done easily with their API, but I want to learn how urllib2 works, so I'm trying to do this the old fashioned way. But, I'm stuck on how to use the urllib. Many tutorials online asked ... | 5 | 2016-08-26T03:32:27Z | 39,157,966 | <p>BeautifulSoup is good for html parsing</p>
<pre><code>from bs4 import BeautifulSoup
##Use your urllib code to get the source code of the page
source = (Your get code here)
soup = BeautifulSoup(source)
##This assumes the id 'ltpid' is the one you are looking for all the time
span = soup.find('span', id="ltpid")
flo... | 1 | 2016-08-26T03:44:10Z | [
"python",
"html",
"urllib2"
] |
Python retrieving value from URL | 39,157,895 | <p>I'm trying to write a python script that checks money.rediff.com for a particular stock price and prints it. I know that this can be done easily with their API, but I want to learn how urllib2 works, so I'm trying to do this the old fashioned way. But, I'm stuck on how to use the urllib. Many tutorials online asked ... | 5 | 2016-08-26T03:32:27Z | 39,196,267 | <p>Use BeautifulSoup instead of regex to parse HTML. </p>
| 1 | 2016-08-28T22:11:27Z | [
"python",
"html",
"urllib2"
] |
Install pyhdf error: hdf.h: No such file or directory | 39,157,914 | <p>I want to install <code>pyhdf</code> to read hdf4 files in python on ubuntu, and I downloaded from <a href="https://sourceforge.net/projects/pysclint/files/pyhdf/" rel="nofollow">https://sourceforge.net/projects/pysclint/files/pyhdf/</a>,<code>pyhdf-0.8.3.tar.gz</code>, but when I run <code>python setup.py install</... | 0 | 2016-08-26T03:35:17Z | 39,200,807 | <p>Well finally I am answering my own question now...For people who want to install python-hdf4 on ubuntu.</p>
<p>Firstly you need to install the hdf4 and then the python-hdf4.</p>
<p>Hdf4 could be downloaded from <a href="https://www.hdfgroup.org/products/hdf4/" rel="nofollow">https://www.hdfgroup.org/products/hdf4/... | 0 | 2016-08-29T07:34:38Z | [
"python",
"pyhdf"
] |
confused about random_state in decision tree of scikit learn | 39,158,003 | <p>Confused about <code>random_state</code> parameter, not sure why decision tree training needs some randomness. My thoughts, (1) is it related to random forest? (2) is it related to split training testing data set? If so, why not use training testing split method directly (<a href="http://scikit-learn.org/stable/modu... | 1 | 2016-08-26T03:48:43Z | 39,158,831 | <p>This is explained in <a href="http://scikit-learn.org/stable/modules/tree.html#tree" rel="nofollow">the documentation</a></p>
<blockquote>
<p>The problem of learning an optimal decision tree is known to be NP-complete under several aspects of optimality and even for simple concepts. Consequently, practical decisi... | 1 | 2016-08-26T05:26:06Z | [
"python",
"python-2.7",
"machine-learning",
"scikit-learn",
"decision-tree"
] |
How to add corresponding elements of 2 multidimensional matrices in python? | 39,158,062 | <p>I have 2 multidimensional arrays , both of size 128X640X5. 5 is the number of channels for the matrices. I wish to add the respective channel values of both the matrices for every point in the matrices. For eg if we have A and B as 2 matrices, I wish to do an operation something like this:
A(x,y,0)+B(x,y,0) =A(x,y,0... | 0 | 2016-08-26T03:58:26Z | 39,158,367 | <p>In order to add each corresponding point of a <code>ndarray</code> in numpy you can use numpy's add function (<a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.add.html" rel="nofollow">numpy.add</a>).</p>
<p>It will add up each corresponding point of two ndarrays which have the <strong>same</strong... | 0 | 2016-08-26T04:35:24Z | [
"python",
"numpy",
"image-processing"
] |
Python eve - POST a list media files with curl command failed with 422 error | 39,158,068 | <p>I use python-eve to build my RESTful API, I set a endpoint 'risks' in settings.py, like so:</p>
<pre><code>risks = {
'schema': {
'description': {
'type': 'string',
'required': True,
},
'pic': {
'type': 'list',
'schema': {
't... | 0 | 2016-08-26T03:58:52Z | 39,218,316 | <p>When you access the <code>risks</code> endpoint you need to supply the right datatypes in order for the resource endpoint to work. It complains about the pic you send because that is still a string and not a list.</p>
<p>You can make your life a bit easier by using <code>requests</code></p>
<pre><code>import reque... | 0 | 2016-08-30T03:25:13Z | [
"python",
"list",
"curl",
"media",
"eve"
] |
Python eve - POST a list media files with curl command failed with 422 error | 39,158,068 | <p>I use python-eve to build my RESTful API, I set a endpoint 'risks' in settings.py, like so:</p>
<pre><code>risks = {
'schema': {
'description': {
'type': 'string',
'required': True,
},
'pic': {
'type': 'list',
'schema': {
't... | 0 | 2016-08-26T03:58:52Z | 39,518,331 | <blockquote>
<p>@Mike Tung</p>
<p>...</p>
<p>You can make your life a bit easier by using requests</p>
<p>...</p>
</blockquote>
<p><strong>How do you pass files to the requests <code>json</code> kwarg ? As file handles ? Or Strings ?</strong></p>
<p>When I try this,</p>
<pre><code>import requests
ur... | 0 | 2016-09-15T18:48:52Z | [
"python",
"list",
"curl",
"media",
"eve"
] |
Select dropdown in AngularJS application from Python Selenium | 39,158,148 | <p>I wanted to test page in <code>Python</code> <code>Selenium</code>, which uses <code>AngularJS</code>. It contains a select option and I have tried a number of options to select it but it fails.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet... | 0 | 2016-08-26T04:09:18Z | 39,158,523 | <p>Use the Select class from selenium.webdriver.support.ui. Pass the select webelement to the constructor. Use selectByVisibleText. Refer to the answer by @alecxe in the post - <a href="http://stackoverflow.com/questions/7867537/selenium-python-drop-down-menu-option-value">Selenium - Python - drop-down menu option valu... | 0 | 2016-08-26T04:56:47Z | [
"python",
"selenium",
"protractor"
] |
Select dropdown in AngularJS application from Python Selenium | 39,158,148 | <p>I wanted to test page in <code>Python</code> <code>Selenium</code>, which uses <code>AngularJS</code>. It contains a select option and I have tried a number of options to select it but it fails.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet... | 0 | 2016-08-26T04:09:18Z | 39,179,288 | <p>If you have tried all the possible attempt but never got success, you should try using <code>execute_script()</code> as below :-</p>
<pre><code>element = driver.find_element_by_id("xtzpp001")
driver.execute_script("var select = arguments[0]; for(var i = 0; i < select.options.length; i++){ if(select.options[i].t... | 0 | 2016-08-27T08:54:58Z | [
"python",
"selenium",
"protractor"
] |
Select dropdown in AngularJS application from Python Selenium | 39,158,148 | <p>I wanted to test page in <code>Python</code> <code>Selenium</code>, which uses <code>AngularJS</code>. It contains a select option and I have tried a number of options to select it but it fails.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet... | 0 | 2016-08-26T04:09:18Z | 39,193,018 | <p>you can also use Actions to click the menu item, here is an example:</p>
<pre><code>menu = driver.find_element_by_css_selector(".nav")
hidden_submenu = driver.find_element_by_css_selector(".nav #submenu1")
ActionChains(driver).move_to_element(menu).click(hidden_submenu).perform()
</code></pre>
| 0 | 2016-08-28T15:46:49Z | [
"python",
"selenium",
"protractor"
] |
GraphLab Create Launcher installation error | 39,158,156 | <p>Why problem creating the "gl-env" ?
I have tried reinstalling it also... but nothing help me out. </p>
<pre><code>CIO_TEST: <not set>
CONDA_DEFAULT_ENV: <not set>
CONDA_ENVS_PATH: <not set>
PATH: C:\Users\Himanshu\Anaconda2\Library\bin;C:\Users\Himanshu\Anaconda2;C:\Users\Himanshu\Anaconda2\Script... | 4 | 2016-08-26T04:10:58Z | 39,297,359 | <p>Having the same problem. Read elsewhere it is because the PATH variable is too long. I deleted everything possible from the PATH variable and that is not the solution.</p>
| 0 | 2016-09-02T16:52:21Z | [
"python",
"windows",
"git",
"anaconda",
"graphlab"
] |
Exception: Acess Violation in client C# | 39,158,157 | <p>I am trying to learn C# through trials and errors. I have a server in Python, and the client in C#.</p>
<p>The client is supposed to get data from the server, save it to disk ((which it doesn't)), then continue using that data to communicate until the user decides to exit it.</p>
<p>Unfortunately, it has been rais... | -1 | 2016-08-26T04:11:21Z | 39,158,696 | <p>You might have a stream that remained open, which prevents a new one to be created. If the msgid is "ConOK" you are creating a new instance without closing it after the write operation is done.</p>
<pre><code>if (msgid == "ConOK"){
string userid = rd.Substring(0, 16);
Game.DisplayHelp(rd.Substring(16, (rd.L... | 1 | 2016-08-26T05:12:12Z | [
"c#",
"python",
"networking",
"visual-studio-2015"
] |
Exception: Acess Violation in client C# | 39,158,157 | <p>I am trying to learn C# through trials and errors. I have a server in Python, and the client in C#.</p>
<p>The client is supposed to get data from the server, save it to disk ((which it doesn't)), then continue using that data to communicate until the user decides to exit it.</p>
<p>Unfortunately, it has been rais... | -1 | 2016-08-26T04:11:21Z | 39,163,165 | <p>At a first glance, you can have different class of bugs. Disregarding the logic flows and intended behaviour of the program, let's start with basic debugging.</p>
<ul>
<li><p>at this step, don't use threads and fibers, from Main just call Run</p></li>
<li><p>there isn't strong input validation</p></li>
<li><p>use ... | 1 | 2016-08-26T09:37:52Z | [
"c#",
"python",
"networking",
"visual-studio-2015"
] |
Comparing Dates in SQLLite | 39,158,180 | <p>Hello Im currently doing a small project in python and sqllite and I have a csv that has been imported into a database with values under table name : Members.</p>
<p>Each member has a "Date Joined" field in the format m/dd/yy. Some example formats are below:</p>
<p><strong>I cant change the values in the csv becau... | 2 | 2016-08-26T04:13:33Z | 39,158,610 | <p>You can try the following query:</p>
<pre><code>SELECT *
FROM yourTable
WHERE CAST(SUBSTR(SUBSTR(join_date, INSTR(join_date, '/') + 1), INSTR(SUBSTR(join_date, INSTR(join_date, '/') + 1), '/') + 1) AS INTEGER) <= 16 OR
(
CAST(SUBSTR(SUBSTR(join_date, INSTR(join_date, '/') + 1), INSTR(SUBSTR(join_... | 0 | 2016-08-26T05:04:56Z | [
"python",
"sql",
"database",
"sqlite"
] |
Python Multithreading basics confusion | 39,158,275 | <p>I have the below code:</p>
<pre><code>import time
from threading import Thread
def fun1():
time.sleep(5)
def fun2():
time.sleep(5)
def fun3():
time.sleep(5)
def fun4():
time.sleep(5)
if __name__ == '__main__':
t1 = Thread(target=fun1, args=())
t2 = Thread(target=fun2, args=())
t3 = Thread(target=fun3... | 1 | 2016-08-26T04:24:58Z | 39,158,320 | <p>Blocking calls in Python (<code>sleep</code>, waiting on I/O or locks) release the GIL, allowing other threads to run while they are blocked, so all four threads can <code>sleep</code> in parallel, that's why you're seeing a five second delay. If you want to see the effects of GIL contention, have the thread functio... | 3 | 2016-08-26T04:29:51Z | [
"python",
"multithreading",
"multiprocessing",
"python-2.x",
"gil"
] |
Python Multithreading basics confusion | 39,158,275 | <p>I have the below code:</p>
<pre><code>import time
from threading import Thread
def fun1():
time.sleep(5)
def fun2():
time.sleep(5)
def fun3():
time.sleep(5)
def fun4():
time.sleep(5)
if __name__ == '__main__':
t1 = Thread(target=fun1, args=())
t2 = Thread(target=fun2, args=())
t3 = Thread(target=fun3... | 1 | 2016-08-26T04:24:58Z | 39,158,326 | <p>Q1: Yes</p>
<p>Q2: If the threads each did something that took 5 seconds of processing time, then you would expect the total time to be 20 seconds. But each thread is just sleeping for 5 seconds, so each thread releases the <code>GIL</code>, and thus allows other threads to run "in parallel" (only conceptually), as... | 2 | 2016-08-26T04:31:12Z | [
"python",
"multithreading",
"multiprocessing",
"python-2.x",
"gil"
] |
Python Multithreading basics confusion | 39,158,275 | <p>I have the below code:</p>
<pre><code>import time
from threading import Thread
def fun1():
time.sleep(5)
def fun2():
time.sleep(5)
def fun3():
time.sleep(5)
def fun4():
time.sleep(5)
if __name__ == '__main__':
t1 = Thread(target=fun1, args=())
t2 = Thread(target=fun2, args=())
t3 = Thread(target=fun3... | 1 | 2016-08-26T04:24:58Z | 39,158,496 | <p>For multithreading environment in python. We have two very different kind of taks:</p>
<ul>
<li>CPU bound: like adding number, running for loop ... any activities that consume CPU. This kind of task hold GIL so it prevent other thread running.</li>
<li>not CPU bound (may be waiting for IO activities from outside re... | 1 | 2016-08-26T04:53:17Z | [
"python",
"multithreading",
"multiprocessing",
"python-2.x",
"gil"
] |
Reshaping a numpy array (matrix) where elements appear in order | 39,158,300 | <p>I have a numpy array with the following shape:</p>
<pre><code>shape -> data
5x3 -> [[
12 10 33
9 88 41
13 39 27
1 4 7
65 78 13
]]
</code></pre>
<p>I need the numpy array to look like this though:</p>
<pre><code>shape -> data
5x3 ->... | 0 | 2016-08-26T04:27:19Z | 39,158,373 | <p>It's a simple enough procedure. We just need to perform two phases, a reshape and a transpose:</p>
<pre><code>Y = X.reshape(X.shape[::-1]).T
</code></pre>
| 1 | 2016-08-26T04:36:18Z | [
"python",
"arrays",
"numpy"
] |
Why does using .latest() on an empty Django queryset return...nothing? | 39,158,325 | <p>Here's some code that builds a queryset, and prints the output at each step (for debugging):</p>
<pre><code>qs = self.get_queryset(True)
print(qs) # [<MyModel: obj_1>, <MyModel: obj_2>, <MyModel: obj_2>, <MyModel: obj_3>]
qs = qs.get_user(user)
print(qs) # []
qs = qs.completed()
print(qs... | 0 | 2016-08-26T04:30:57Z | 39,162,440 | <p><a href="https://docs.djangoproject.com/en/1.10/ref/models/querysets/#latest" rel="nofollow">From the documentation</a>:</p>
<blockquote>
<p>Like get(), earliest() and latest() raise DoesNotExist if there is no object with the given parameters.</p>
</blockquote>
<p><code>qs.latest('field')</code> should raise <c... | 2 | 2016-08-26T09:03:48Z | [
"python",
"django",
"django-queryset"
] |
How to convert the following Matlab loop into Python? | 39,158,384 | <p>I have been working on translating Matlab code into Python and came across a loop that I'm having some difficulty converting as I'm fairly new to both the languages.</p>
<pre><code>if fdp >=2
degreeTwoVector=[];
counter =1;
for i = 1:numVariables
for j = 1:numVariables
degreeTwoVector(counter,:) = [i... | 2 | 2016-08-26T04:37:43Z | 39,158,704 | <p>You are not too far off:
You do not need a <code>break</code> statement, it is causing a precocious, well, break to the loop (at the first iteration).
So here you go:
</p>
<pre><code>numVariables = np.shape(X)[0] # number of rows in X which is given
if fdp >= 2:
degreeTwoVector = np.zeros((numVariables, 3))... | 3 | 2016-08-26T05:13:06Z | [
"python",
"matlab",
"python-2.7"
] |
How to create mask for outer pixels when using skimage.transform.rotate | 39,158,420 | <p>skimage rotate function create "outer" pixels, no matter how this pixels extrapolated (wrap, mirror, constant, etc) - they are fake, and can affect statistical analysis of image. How can I get mask of this pixels to ignore them in analysis?
<a href="http://i.stack.imgur.com/xzg5n.png" rel="nofollow"><img src="http:/... | 2 | 2016-08-26T04:43:39Z | 39,160,945 | <pre><code>mask_val = 2
rotated = skimage.transform.rotate(img, 15, resize=True, cval=mask_val,
preserve_range=False)
mask = rotated == mask_val
</code></pre>
<p>Idea: pick a value for the mask which doesn't appear in the image, then obtain mask by checking for equality with this va... | 1 | 2016-08-26T07:41:18Z | [
"python",
"skimage"
] |
socket progamming : tcp_client "gai" error | 39,158,573 | <p>I'm setting up a simple client socket (my server socket works well). But I'm stuck by a lil bug. here's my code and here's the error. Cant find this errorr nowhere on the web.</p>
<pre><code>from socket import *
import sys
host=socket.gethostname()
#host=127.0.0.1
serverPort= 12345
clientSocket =socket(AF_INET,SOC... | 0 | 2016-08-26T05:01:35Z | 39,158,700 | <p>Your code is incorrect here (did you post the real code you ran?):</p>
<ol>
<li>host cannot be empty</li>
<li><code>connect</code> takes 1 argument and it's a tuple</li>
<li>if you do <code>from socket import *</code>, you cannot do <code>socket.socket</code></li>
</ol>
<p>fixed:</p>
<pre><code>import socket
impo... | 0 | 2016-08-26T05:12:51Z | [
"python",
"serversocket",
"tcpsocket"
] |
Can you have multiple read/writes to SQLite database simultaneously? | 39,158,621 | <p>I am using Python with SQLite currently and wondering if it is safe to have multiple threads reading and writing to the database simultaneously. Does SQLite handle data coming in as a queue or have sort of mechanism that will stop the data from getting corrupt?</p>
| 1 | 2016-08-26T05:05:33Z | 39,158,655 | <p>SQLite has a number of robust locking mechanisms to ensure the data doesn't get corrupted, but the problem with that is if you have a number of threads reading and writing to it simultaneously you'll suffer pretty badly in terms of performance as they all trip over the others. It's not intended to be used this way, ... | 1 | 2016-08-26T05:08:54Z | [
"python",
"multithreading",
"sqlite"
] |
Can you have multiple read/writes to SQLite database simultaneously? | 39,158,621 | <p>I am using Python with SQLite currently and wondering if it is safe to have multiple threads reading and writing to the database simultaneously. Does SQLite handle data coming in as a queue or have sort of mechanism that will stop the data from getting corrupt?</p>
| 1 | 2016-08-26T05:05:33Z | 39,163,285 | <p>This is my issue too. SQLite using some kind of locking mechanism which prevent you doing concurrency operation on a DB. But here is a trick which i use when my db are small. You can select all your tables data into memory and operate on it and then update the original table.</p>
<p>As i said this is just a trick a... | 2 | 2016-08-26T09:43:14Z | [
"python",
"multithreading",
"sqlite"
] |
I am simply trying to write a python script that will change the filename in a directory of files | 39,158,636 | <p>I am trying to create a script in python 2.7 that will rename all the files in a directory. Below is the code I have so far. The first function removes any numbers in the file name. The second function is supposed to rename the new file name. I get the following error when the second function runs:</p>
<blockquote>... | 4 | 2016-08-26T05:07:08Z | 39,158,669 | <p>instead of doing:</p>
<pre><code>if file_name == filename:
file_name = file_name + 1
</code></pre>
<p>do something like this:</p>
<pre><code>counter = 0
for file_name in file_container:
if file_name == file_name: # this will always be True - so it's unnecessary
file_name = "{0}_{1}".format(file_na... | 4 | 2016-08-26T05:10:10Z | [
"python",
"python-2.7",
"loops",
"increment"
] |
Using HTML, CSS, JS with Python to make desktop application? | 39,158,663 | <p>I recently made a program. It's developed using Node.JS and Electron to make it a desktop application. Unfortunately, Electron is quite big in base file size and I'd like to reduce the file size. I've looked at my app files before adding electron and it's around 38mb. When adding electron it's roughly over 100mb mor... | -1 | 2016-08-26T05:09:29Z | 39,163,137 | <p>YES. You can use QT standard library but if you persist on writing UI yourself there is an HTMLpy Library which can find here <a href="http://amol-mandhane.github.io/htmlPy/" rel="nofollow">HTMLPY</a></p>
<p>htmlPy is a wrapper around PySide's QtWebKit library. It helps with creating beautiful GUIs using HTML5, CSS... | 1 | 2016-08-26T09:36:21Z | [
"javascript",
"python",
"html",
"css"
] |
How to select column and rows in pandas without column or row names? | 39,158,699 | <p>I have a pandas dataframe(df) like this</p>
<pre><code> Close Close Close Close Close
Date
2000-01-03 00:00:00 NaN NaN NaN NaN -0.033944
2000-01-04 00:00:00 NaN NaN NaN... | 1 | 2016-08-26T05:12:49Z | 39,158,738 | <p>If you want the fifth column:</p>
<pre><code>df.ix[:,4]
</code></pre>
<p>Stick the colon in there to take all the rows for that column.</p>
<p>To exclude a fifth column you could try:</p>
<pre><code>df.ix[:, (x for x in range(0, len(df.columns)) if x != 4)]
</code></pre>
| 1 | 2016-08-26T05:16:56Z | [
"python",
"pandas"
] |
How to select column and rows in pandas without column or row names? | 39,158,699 | <p>I have a pandas dataframe(df) like this</p>
<pre><code> Close Close Close Close Close
Date
2000-01-03 00:00:00 NaN NaN NaN NaN -0.033944
2000-01-04 00:00:00 NaN NaN NaN... | 1 | 2016-08-26T05:12:49Z | 39,158,821 | <p>To select filter column by index:</p>
<pre><code>In [19]: df
Out[19]:
Date Close Close.1 Close.2 Close.3 Close.4
0 2000-01-0300:00:00 NaN NaN NaN NaN -0.033944
1 2000-01-0400:00:00 NaN NaN NaN NaN 0.035137
2 2000-01-0500:00:00 -0.033944 ... | 1 | 2016-08-26T05:24:48Z | [
"python",
"pandas"
] |
How to select column and rows in pandas without column or row names? | 39,158,699 | <p>I have a pandas dataframe(df) like this</p>
<pre><code> Close Close Close Close Close
Date
2000-01-03 00:00:00 NaN NaN NaN NaN -0.033944
2000-01-04 00:00:00 NaN NaN NaN... | 1 | 2016-08-26T05:12:49Z | 39,160,661 | <p>Use <code>iloc</code>. It is explicitly a position based indexer. <code>ix</code> can be both and will get confused if an index is integer based.</p>
<pre><code>df.iloc[:, [4]]
</code></pre>
<p><a href="http://i.stack.imgur.com/dfnha.png" rel="nofollow"><img src="http://i.stack.imgur.com/dfnha.png" alt="enter im... | 2 | 2016-08-26T07:26:05Z | [
"python",
"pandas"
] |
List conversion - inplace | 39,158,754 | <p>I am trying to convert ['1','2','3','4'] to [1,2,3,4]
I want to make this conversion inplace. Is it possible to do it? If not, what is the optimal solution.</p>
| 3 | 2016-08-26T05:18:40Z | 39,158,850 | <p>This should be pretty much in-place?</p>
<pre><code>In [31]: l = ['1','2','3','4']
In [32]: for i in range(len(l)):
....: l[i] = int(l[i])
....:
In [33]: l
Out[33]: [1, 2, 3, 4]
</code></pre>
<p>Or, you could do it by using <code>enumerate</code> which takes an iterable (like a <code>list</code>) ... | 0 | 2016-08-26T05:29:05Z | [
"python",
"arrays",
"list",
"in-place"
] |
List conversion - inplace | 39,158,754 | <p>I am trying to convert ['1','2','3','4'] to [1,2,3,4]
I want to make this conversion inplace. Is it possible to do it? If not, what is the optimal solution.</p>
| 3 | 2016-08-26T05:18:40Z | 39,158,927 | <p>As long as the whole array fits in memory, you should just be able to step through it, replacing each item as you go:</p>
<pre><code># bigarray is ['1','2','3','4',...];
# loop through bigarray using index i
for i in range(len(bigarray)):
# coerce bigarray[i] to int in place
bigarray[i] = int(bigarray[i])
... | 0 | 2016-08-26T05:33:46Z | [
"python",
"arrays",
"list",
"in-place"
] |
List conversion - inplace | 39,158,754 | <p>I am trying to convert ['1','2','3','4'] to [1,2,3,4]
I want to make this conversion inplace. Is it possible to do it? If not, what is the optimal solution.</p>
| 3 | 2016-08-26T05:18:40Z | 39,159,317 | <p>you can do it with list comprehension like this:</p>
<pre><code>l = [int(item) for item in l]
</code></pre>
| 1 | 2016-08-26T06:04:03Z | [
"python",
"arrays",
"list",
"in-place"
] |
List conversion - inplace | 39,158,754 | <p>I am trying to convert ['1','2','3','4'] to [1,2,3,4]
I want to make this conversion inplace. Is it possible to do it? If not, what is the optimal solution.</p>
| 3 | 2016-08-26T05:18:40Z | 39,161,253 | <p>I think it is better to use <a href="https://docs.python.org/3/library/functions.html?highlight=map#map" rel="nofollow"><code>map</code></a> for this kind of tasks. Which creates iterator, what means it is more memory efficient.</p>
<pre><code>l = list(map(int, l))
# here I convert it to list, but usually you would... | 2 | 2016-08-26T07:59:19Z | [
"python",
"arrays",
"list",
"in-place"
] |
Python adaptfilt-echo canceller example with two .wav files | 39,158,762 | <p>this code isa modification from the example of adaptfilt2.0 echo canceller</p>
<pre><code> u(n) ------->->------+----------->->-----------
| |
+-----------------+ +------------------+
+->-| Adaptive filter | | John's ... | 0 | 2016-08-26T05:19:27Z | 39,158,878 | <p>It looks like you have a "copy and paste" error. After reading <code>audio2.wav</code>, this line</p>
<pre><code>v = np.float64(u)
</code></pre>
<p>should be </p>
<pre><code>v = np.float64(v)
</code></pre>
<p>(Now that you see it is a trivial mistake, feel free to delete your question!)</p>
<hr>
<p>P.S. Using... | 0 | 2016-08-26T05:30:45Z | [
"python",
"numpy",
"audio",
"wave",
"pyaudio"
] |
Iterating through a list and using ltems of other lists | 39,158,795 | <pre><code>l = ['hello','hi']
a=[1,2,3,4]
b=[4,5,6,7]
for i in l:
func(x=a[index],y=b[index])
</code></pre>
<p>Now when I'm iterating through l , in the first iteration i want to use first a[0]and b[0] for a function and then use a[1] and b[1] for the same function</p>
<p>And in the second iteration of l,i want to u... | 1 | 2016-08-26T05:22:47Z | 39,158,858 | <pre><code>>>> l = ['hello','hi']
>>> a=[1,2,3,4]
>>> b=[4,5,6,7]
>>> for i, val in enumerate(l):
... print '---iteration', i
... print 'l:', val
... print 'a:', a[2*i], ', b:', b[2*i]
... print 'a:', a[2*i+1], ' b:', b[2*i+1]
...
---iteration 0
l: hello
a: 1 , b: 4
a... | 2 | 2016-08-26T05:29:53Z | [
"python",
"python-2.7"
] |
Iterating through a list and using ltems of other lists | 39,158,795 | <pre><code>l = ['hello','hi']
a=[1,2,3,4]
b=[4,5,6,7]
for i in l:
func(x=a[index],y=b[index])
</code></pre>
<p>Now when I'm iterating through l , in the first iteration i want to use first a[0]and b[0] for a function and then use a[1] and b[1] for the same function</p>
<p>And in the second iteration of l,i want to u... | 1 | 2016-08-26T05:22:47Z | 39,177,025 | <p>You can use the index method to find the index of the element of the list you are iterating through. Using that index you can find the element from the list you want to pass to the function.</p>
<pre><code>l = ['hello','hi']
a=[1,2,3,4]
b=[4,5,6,7]
def demo(x, y):
print x, y
for i in l:
print i
idx = ... | 0 | 2016-08-27T02:57:02Z | [
"python",
"python-2.7"
] |
Python Regex and group function | 39,158,859 | <p>Hi trying to separate each of the expressions from the colon. So want to obtain 'ss_vv', 'kk' and 'pp'. But the two print expressions below give me 'v' and 'k', so getting parts only of each string. Can anyone see what wrong here? </p>
<pre><code>m0 = re.compile(r'([a-z]|_)+:([a-z]|_)+:([a-z]|_)+')
m1 = m0... | 0 | 2016-08-26T05:29:53Z | 39,158,945 | <pre><code>In [52]: m0 = re.compile(r'([a-z|_]+):([a-z|_]+):([a-z|_]+)')
In [53]: m1 = m0.search('ss_vv:kk:pp')
In [54]: print m1.group(1)
ss_vv
In [55]: print m1.group(2)
kk
In [56]: print m1.group(3)
pp
</code></pre>
<p>What my regex does:</p>
<pre><code>([a-z|_]+):([a-z|_]+):([a-z|_]+)
</code></pre>
<p><img s... | 4 | 2016-08-26T05:35:41Z | [
"python",
"regex"
] |
Python Regex and group function | 39,158,859 | <p>Hi trying to separate each of the expressions from the colon. So want to obtain 'ss_vv', 'kk' and 'pp'. But the two print expressions below give me 'v' and 'k', so getting parts only of each string. Can anyone see what wrong here? </p>
<pre><code>m0 = re.compile(r'([a-z]|_)+:([a-z]|_)+:([a-z]|_)+')
m1 = m0... | 0 | 2016-08-26T05:29:53Z | 39,158,948 | <p>No need to use regex for your case. You can just split on basis of ':' and get required output..</p>
<pre><code>>>> a = 'ss_vv:kk:pp'
>>> b_list = a.split(':')
>>> b_list
['ss_vv', 'kk', 'pp']
>>>
</code></pre>
| 1 | 2016-08-26T05:35:55Z | [
"python",
"regex"
] |
Python Regex and group function | 39,158,859 | <p>Hi trying to separate each of the expressions from the colon. So want to obtain 'ss_vv', 'kk' and 'pp'. But the two print expressions below give me 'v' and 'k', so getting parts only of each string. Can anyone see what wrong here? </p>
<pre><code>m0 = re.compile(r'([a-z]|_)+:([a-z]|_)+:([a-z]|_)+')
m1 = m0... | 0 | 2016-08-26T05:29:53Z | 39,159,009 | <p>What are the other rules for the regular expression? based on your question, this regex would do:</p>
<pre><code>m0 = re.compile(r'(.*):(.*):(.*)')
m1 = m0.search('ss_vv:kk:pp')
print m1.group(1)
print m1.group(2)
</code></pre>
<p><strong>UPDATE:</strong>
as mentioned by @Jan in the comments, for efficient and bet... | 2 | 2016-08-26T05:40:57Z | [
"python",
"regex"
] |
Extract data from an HTML tag which has specific attributes | 39,158,931 | <pre><code><tr bgcolor="#FFFFFF">
<td class="tablecontent" scope="row" rowspan="1">
<a href="http://netprofile-us2/netprofile/npIndex.do?cpyKey=80823">ZURICH AMERICAN INSURANCE COMPANY</a>
</td>
<td class="tablecontent" scope="row" rowspan="1">
FARMERS GRO... | -1 | 2016-08-26T05:34:08Z | 39,164,693 | <p>You can use css selector <code>nth-of-type</code> to navigate through the <code>td</code>s</p>
<p>Here's a sample"</p>
<pre><code>soup = BeautifulSoup(html, 'html.parser')
a = soup.select('td:nth-of-type(1) a')[0]
href = a['href']
td = soup.select("td:nth-of-type(3)")[0]
text = td.get_text(strip=True)
</code></pre... | 0 | 2016-08-26T10:58:06Z | [
"python",
"python-2.7",
"beautifulsoup"
] |
Extract data from an HTML tag which has specific attributes | 39,158,931 | <pre><code><tr bgcolor="#FFFFFF">
<td class="tablecontent" scope="row" rowspan="1">
<a href="http://netprofile-us2/netprofile/npIndex.do?cpyKey=80823">ZURICH AMERICAN INSURANCE COMPANY</a>
</td>
<td class="tablecontent" scope="row" rowspan="1">
FARMERS GRO... | -1 | 2016-08-26T05:34:08Z | 39,168,372 | <p>You can find all <code>tr</code> elements, iterate over them, then do the context-specific searches for the inner <code>td</code> elements and get the first and the third:</p>
<pre><code>for tr in soup.find_all('tr'):
cells = tr.find_all('td')
if len(cells) < 3:
continue # safety pillow
lin... | 1 | 2016-08-26T14:13:16Z | [
"python",
"python-2.7",
"beautifulsoup"
] |
How to get a single value from gae ndb query? | 39,158,983 | <p>I'm using Google App Engine with ndb backend and I want to get a single value ex: <code>int</code> from the ndb entity, after any query I get the whole entity with a projection, in my case I have a Transactions entity and I want to sum the amount properties.</p>
<p>What I'm using now is list comprehension on the qu... | 0 | 2016-08-26T05:39:00Z | 39,163,351 | <p>There is no direct way to get list of values from projection fetch (I suppose you are looking for ndb analog of django orm Transactions.query().all().values()), you may do as follows:</p>
<pre><code>result = sum([x.amount for x in Transactions.query().fetch(
projection=[Transactions.amount,])])
</code></pre>
<... | 1 | 2016-08-26T09:46:43Z | [
"python",
"google-app-engine",
"app-engine-ndb",
"gql",
"gqlquery"
] |
How to implement SNMP in python? | 39,159,059 | <p>I am now currently working with SNMP. The package I used is pysnmp but I do not know how to implement snmp in python. The problem is, given an ip address, it should give the details of that device using snmp. Could anyone suggest me how to do it?</p>
| -5 | 2016-08-26T05:44:47Z | 39,170,725 | <p>If I was in your shoes, I'd read briefly on the <a href="http://pysnmp.sourceforge.net/docs/tutorial.html" rel="nofollow">subject</a> e.g. how SNMP is designed and how it is typically used. Then I'd try to use ready-made <a href="http://pysnmp.sourceforge.net/examples/hlapi/asyncore/sync/manager/cmdgen/walking-opera... | 0 | 2016-08-26T16:22:23Z | [
"python",
"ip",
"snmp",
"pysnmp"
] |
Is there a direct way to ignore parts of a python datetime object? | 39,159,092 | <p>I'm trying to compare two datetime objects, but ignoring the year. For example, given</p>
<pre><code>a = datetime.datetime(2015,07,04,01,01,01)
b = datetime.datetime(2016,07,04,01,01,01)
</code></pre>
<p>I want a == b to return True by ignoring the year. To do a comparison like this, I imagine I could just create ... | 3 | 2016-08-26T05:47:26Z | 39,159,198 | <pre><code>(a.month, a.day, a.hour, a.minute, a.second ==
b.month, b.day, b.hour, b.minute, b.second)
</code></pre>
<p>A less explicit method is to compare the corresponding elements in the time tuples:</p>
<pre><code>a.timetuple()[1:6] == b.timetuple()[1:6]
</code></pre>
| 8 | 2016-08-26T05:56:26Z | [
"python",
"datetime"
] |
Is there a direct way to ignore parts of a python datetime object? | 39,159,092 | <p>I'm trying to compare two datetime objects, but ignoring the year. For example, given</p>
<pre><code>a = datetime.datetime(2015,07,04,01,01,01)
b = datetime.datetime(2016,07,04,01,01,01)
</code></pre>
<p>I want a == b to return True by ignoring the year. To do a comparison like this, I imagine I could just create ... | 3 | 2016-08-26T05:47:26Z | 39,159,319 | <pre><code>def cmp(a,b):
return (a > b) - (a < b)
d1=(2015,7,4,1,1,1)
d2=(2016,7,4,1,1,1)
cmp(list(d1)[1:],list(d2)[1:])
</code></pre>
<p>Returns 0 - they are the same, i.e. 0 differences</p>
<pre><code>d1=(2015,7,4,1,1,1)
d2=(2015,2,4,1,1,1)
cmp(list(d1)[1:], list(d2)[1:])
</code></pre>
<p>returns -1, the... | 1 | 2016-08-26T06:04:13Z | [
"python",
"datetime"
] |
Is there a direct way to ignore parts of a python datetime object? | 39,159,092 | <p>I'm trying to compare two datetime objects, but ignoring the year. For example, given</p>
<pre><code>a = datetime.datetime(2015,07,04,01,01,01)
b = datetime.datetime(2016,07,04,01,01,01)
</code></pre>
<p>I want a == b to return True by ignoring the year. To do a comparison like this, I imagine I could just create ... | 3 | 2016-08-26T05:47:26Z | 39,159,366 | <p>You can also consider comparing formatted date strings consisting of the fields you wish to include in the comparison. This allows you to be somewhat explicit while using shortened versions of the fields (as opposed to accessing <code>a.year</code>, <code>a.month</code>, etc.).</p>
<pre><code>from datetime import d... | 3 | 2016-08-26T06:07:10Z | [
"python",
"datetime"
] |
Is there a direct way to ignore parts of a python datetime object? | 39,159,092 | <p>I'm trying to compare two datetime objects, but ignoring the year. For example, given</p>
<pre><code>a = datetime.datetime(2015,07,04,01,01,01)
b = datetime.datetime(2016,07,04,01,01,01)
</code></pre>
<p>I want a == b to return True by ignoring the year. To do a comparison like this, I imagine I could just create ... | 3 | 2016-08-26T05:47:26Z | 39,159,367 | <p>Try:</p>
<pre><code>a.replace(year=1,microsecond=0) == b.replace(year=1,microsecond=0)
</code></pre>
| 5 | 2016-08-26T06:07:14Z | [
"python",
"datetime"
] |
Is there a direct way to ignore parts of a python datetime object? | 39,159,092 | <p>I'm trying to compare two datetime objects, but ignoring the year. For example, given</p>
<pre><code>a = datetime.datetime(2015,07,04,01,01,01)
b = datetime.datetime(2016,07,04,01,01,01)
</code></pre>
<p>I want a == b to return True by ignoring the year. To do a comparison like this, I imagine I could just create ... | 3 | 2016-08-26T05:47:26Z | 39,159,370 | <pre><code>In [70]: a
Out[70]: datetime.datetime(2015, 7, 4, 0, 0)
In [71]: b
Out[71]: datetime.datetime(2016, 7, 4, 0, 0)
In [72]: def my_date_cmp(a, b):
....: return a.replace(year = b.year) == b
....:
In [73]: my_date_cmp(a, b)
Out[73]: True
</code></pre>
| 0 | 2016-08-26T06:07:22Z | [
"python",
"datetime"
] |
Looping through (and opening) specific types of files in folder? | 39,159,131 | <p>I want to loop through files with a certain extension in a folder, in this case .txt, open the file, and print matches for a regex pattern. When I run my program however, it only prints results for one file out of the two in the folder:</p>
<blockquote>
<p>Anthony is too cool for school. I Reported the criminal. ... | 0 | 2016-08-26T05:50:19Z | 39,159,248 | <p>U can do as simple as this :(its just a loop through file)</p>
<pre><code>import re, os
Regex = re.compile(r'[A-Z]')
filepath =input('Enter a folder path: ')
files = os.listdir(filepath)
count = 0
for file in files:
if '.txt' in file:
fileobj = open(os.path.join(filepath, file), 'r')
filetext ... | 1 | 2016-08-26T05:59:25Z | [
"python",
"regex",
"loops",
"operating-system"
] |
Looping through (and opening) specific types of files in folder? | 39,159,131 | <p>I want to loop through files with a certain extension in a folder, in this case .txt, open the file, and print matches for a regex pattern. When I run my program however, it only prints results for one file out of the two in the folder:</p>
<blockquote>
<p>Anthony is too cool for school. I Reported the criminal. ... | 0 | 2016-08-26T05:50:19Z | 39,159,640 | <p>The <code>del</code> is causing the problem. The <code>for</code> loop have no idea if you delete an element or not, so it always advances. There might be a hidden file in the directory, and it is the first element in the files. After it got deleted, the for loop skips one of the files and then reads the second one.... | 0 | 2016-08-26T06:27:31Z | [
"python",
"regex",
"loops",
"operating-system"
] |
Looping through (and opening) specific types of files in folder? | 39,159,131 | <p>I want to loop through files with a certain extension in a folder, in this case .txt, open the file, and print matches for a regex pattern. When I run my program however, it only prints results for one file out of the two in the folder:</p>
<blockquote>
<p>Anthony is too cool for school. I Reported the criminal. ... | 0 | 2016-08-26T05:50:19Z | 39,159,867 | <p><strong>glob module</strong> will help you much more since you want to read files with specific extension.</p>
<p>You can directly get list of files with extension "txt" i.e. you saved one <strong>'if'</strong> construct.</p>
<p>More info on <a href="https://pymotw.com/2/glob/" rel="nofollow">glob module</a>.</p>
... | 0 | 2016-08-26T06:41:43Z | [
"python",
"regex",
"loops",
"operating-system"
] |
Label Not Showing in Odoo-9 | 39,159,296 | <p>I created a boolean field. The boolean is showing but the label isn't.</p>
<pre><code>class product_pricelist_inherit(models.Model):
_inherit = 'product.pricelist'
myfield= fields.Boolean(string="Is this Pricelist Eligible for Me?")
</code></pre>
<p>XML:</p>
<pre><code><odoo>
<record id="produ... | 5 | 2016-08-26T06:02:40Z | 39,159,432 | <p>It will not show your field label because you have added field in <code><div></code></p>
<p>Try with following code.</p>
<p>Replace </p>
<pre><code><field name="myfield"/>
</code></pre>
<p>with</p>
<pre><code><label for="myfield"/>
<field name="myfield"/>
</code></pre>
| 3 | 2016-08-26T06:12:03Z | [
"python",
"xml",
"openerp",
"odoo-9"
] |
Label Not Showing in Odoo-9 | 39,159,296 | <p>I created a boolean field. The boolean is showing but the label isn't.</p>
<pre><code>class product_pricelist_inherit(models.Model):
_inherit = 'product.pricelist'
myfield= fields.Boolean(string="Is this Pricelist Eligible for Me?")
</code></pre>
<p>XML:</p>
<pre><code><odoo>
<record id="produ... | 5 | 2016-08-26T06:02:40Z | 39,167,275 | <p>You can use <code>group</code> to show field label: </p>
<pre><code><group>
<field name="myfield"/>
</group>
</code></pre>
<p>There is a <code>group</code> just after <code>name</code> field, It can be done using <code>xpath</code>: </p>
<pre><code><xpath expr="//group" position="inside... | 1 | 2016-08-26T13:16:18Z | [
"python",
"xml",
"openerp",
"odoo-9"
] |
Python Multithreading vs Multiprocessing vs Sequential Execution | 39,159,438 | <p>I have the below code:</p>
<pre><code>import time
from threading import Thread
from multiprocessing import Process
def fun1():
for _ in xrange(10000000):
print 'in fun1'
pass
def fun2():
for _ in xrange(10000000):
print 'in fun2'
pass
def fun3():
for _ in xrange(10000000):
... | 4 | 2016-08-26T06:12:36Z | 39,159,940 | <p>You use <code>time.clock</code>, wich gave you CPU time and not real time : you can't use that in your case, as it gives you the execution time (how long did you use the CPU to run your code, wich will be almost the same time for each of these case)</p>
<p>Running your code with <code>time.time()</code> instead of ... | 4 | 2016-08-26T06:46:09Z | [
"python",
"multithreading",
"python-2.7",
"multiprocessing"
] |
Python Multithreading vs Multiprocessing vs Sequential Execution | 39,159,438 | <p>I have the below code:</p>
<pre><code>import time
from threading import Thread
from multiprocessing import Process
def fun1():
for _ in xrange(10000000):
print 'in fun1'
pass
def fun2():
for _ in xrange(10000000):
print 'in fun2'
pass
def fun3():
for _ in xrange(10000000):
... | 4 | 2016-08-26T06:12:36Z | 39,160,139 | <p>Basically you're right.
What platform do you use to run the code snippet? I guess Windows.
Be noticed that "print" <strong>is not CPU bound</strong> so you should comment out "print" and try to run it on Linux to see the difference (It should be what you expect).
Use code like this:</p>
<pre><code>def fun1():
fo... | 0 | 2016-08-26T06:57:05Z | [
"python",
"multithreading",
"python-2.7",
"multiprocessing"
] |
pandas: how to do multiple groupby-apply operations | 39,159,475 | <p>I have more experience with Râs <code>data.table</code>, but am trying to learn <code>pandas</code>. In <code>data.table</code>, I can do something like this:</p>
<pre><code>> head(dt_m)
event_id device_id longitude latitude time_ category
1: 1004583 -100015673884079572 NA ... | 6 | 2016-08-26T06:14:58Z | 39,159,561 | <p>IIUC, use <code>groupby</code> and <code>agg</code>. See <a href="http://pandas.pydata.org/pandas-docs/stable/groupby.html#applying-multiple-functions-at-once" rel="nofollow">docs</a> for more information.</p>
<pre><code>df = pd.DataFrame(np.random.rand(10, 2),
pd.MultiIndex.from_product([list('X... | 7 | 2016-08-26T06:20:40Z | [
"python",
"pandas",
"dataframe",
"group-by"
] |
pandas: how to do multiple groupby-apply operations | 39,159,475 | <p>I have more experience with Râs <code>data.table</code>, but am trying to learn <code>pandas</code>. In <code>data.table</code>, I can do something like this:</p>
<pre><code>> head(dt_m)
event_id device_id longitude latitude time_ category
1: 1004583 -100015673884079572 NA ... | 6 | 2016-08-26T06:14:58Z | 39,177,298 | <p>@piRSquared has a great answer but in your particular case I think you might be interested in using pandas very flexible <a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.core.groupby.GroupBy.apply.html" rel="nofollow" title="apply function">apply function</a>. Because it can be applied to each ... | 0 | 2016-08-27T03:54:08Z | [
"python",
"pandas",
"dataframe",
"group-by"
] |
Trouble with restoring pretrained model in tensorflow | 39,159,528 | <p>I ran the demo program of word2vec which is included in TensorFlow, and now trying to restore the pretrained model from files, but it doesn't work.</p>
<p>I ran this script file:
<a href="https://github.com/tensorflow/tensorflow/blob/r0.10/tensorflow/models/embedding/word2vec.py" rel="nofollow">https://github.com/t... | 0 | 2016-08-26T06:18:08Z | 39,161,774 | <p>Try the following:</p>
<pre><code>saver = tf.train.Saver()
with tf.Session() as sess:
checkpoint = tf.train.get_checkpoint_state(checkpoint_dir)
if checkpoint and checkpoint.model_checkpoint_path:
saver.restore(sess, checkpoint.model_checkpoint_path)
</code></pre>
<p>Where <code>checkpoint_dir</cod... | 0 | 2016-08-26T08:28:42Z | [
"python",
"tensorflow",
"word2vec"
] |
Trouble with restoring pretrained model in tensorflow | 39,159,528 | <p>I ran the demo program of word2vec which is included in TensorFlow, and now trying to restore the pretrained model from files, but it doesn't work.</p>
<p>I ran this script file:
<a href="https://github.com/tensorflow/tensorflow/blob/r0.10/tensorflow/models/embedding/word2vec.py" rel="nofollow">https://github.com/t... | 0 | 2016-08-26T06:18:08Z | 39,162,836 | <p>I solved this by myself. I wondered where the key 'Skipgram' comes from, and dug the source code. To solve the problem, just add the following on the top:</p>
<pre><code>from tensorflow.models.embedding import gen_word2vec
</code></pre>
<p>I still don't understand exactly what I am doing, but maybe this is because... | 0 | 2016-08-26T09:22:42Z | [
"python",
"tensorflow",
"word2vec"
] |
Find index of multiple queries in a multidimensional numpy array | 39,159,548 | <p>I am looking for a way to find indices of an array of queries in a multidimensional array. For example:</p>
<pre><code>arr = np.array([[17, 5, 19, 9],
[18, 13, 3, 7],
[ 8, 1, 4, 2],
[ 8, 9, 7, 19],
[ 6, 11, 8, 5],
[11, 16, 13, 18],
[ 0, 1, 2, 9],
[ 1, 7, 4, 6]])
</code></pre>
... | 1 | 2016-08-26T06:19:37Z | 39,159,618 | <p>You can get the indices of each matching value by zipping the results of your <code>where</code> function and then using the <code>*</code> dereferencing operator.</p>
<pre><code>arr = np.array([[17, 5, 19, 9],
[18, 13, 3, 7],
[ 8, 1, 4, 2], # (2, 1)
[ 8, 9, ... | 0 | 2016-08-26T06:25:33Z | [
"python",
"arrays",
"numpy",
"multidimensional-array"
] |
Find index of multiple queries in a multidimensional numpy array | 39,159,548 | <p>I am looking for a way to find indices of an array of queries in a multidimensional array. For example:</p>
<pre><code>arr = np.array([[17, 5, 19, 9],
[18, 13, 3, 7],
[ 8, 1, 4, 2],
[ 8, 9, 7, 19],
[ 6, 11, 8, 5],
[11, 16, 13, 18],
[ 0, 1, 2, 9],
[ 1, 7, 4, 6]])
</code></pre>
... | 1 | 2016-08-26T06:19:37Z | 39,161,386 | <p>IIUC you may try this:</p>
<pre><code>In[19]:np.where((arr==4)|(arr==5))
Out[19]: (array([0, 2, 4, 7], dtype=int64), array([1, 2, 3, 2], dtype=int64))
</code></pre>
| 1 | 2016-08-26T08:07:40Z | [
"python",
"arrays",
"numpy",
"multidimensional-array"
] |
How to return value from recursive function in python? | 39,159,573 | <p>I'm working with binary tree in python. I need to create a method which searches the tree and return the best node where a new value can be inserted. But i'm have trouble returning a value from this recursive function. I'm a total newbie in python.</p>
<pre><code>def return_key(self, val, node):
if(val < nod... | 0 | 2016-08-26T06:21:46Z | 39,159,591 | <p>You need to return the result of your <em>recursive</em> call. You are ignoring it here:</p>
<pre><code>if(node.l != None):
self.return_key(val, node.l)
</code></pre>
<p>and</p>
<pre><code>if(node.r != None):
self.return_key(val, node.r)
</code></pre>
<p>Recursive calls are no different from other functi... | 4 | 2016-08-26T06:23:01Z | [
"python",
"python-2.7",
"python-3.x",
"recursion",
"binary-search-tree"
] |
Odoo Server Error ubuntu | 39,159,847 | <p>When try install any module get this error.</p>
<pre><code>Odoo Server Error
Traceback (most recent call last):
File "/home/nolimit/git/odoo/openerp/http.py", line 648, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/home/nolimit/git/odoo/openerp/http.py", line 685,... | 0 | 2016-08-26T06:40:53Z | 39,161,213 | <p>It seems like you forget to declare <code>name</code> field on your Class.</p>
<p>You can resolve it with following two option:</p>
<ol>
<li>Add <em>name</em> field on your <em>class daily_transaction</em> OR</li>
<li><p>You may change field definition like</p>
<pre><code>'name': fields.char('Subject', size=128, ... | 0 | 2016-08-26T07:57:15Z | [
"python",
"openerp",
"odoo-8",
"odoo-9"
] |
Redis get and set decorator | 39,160,075 | <p>Currently working on python and redis. I have Flask as my framework and working on Blueprints.</p>
<p>Looking into implementing cache with redis for my APIs, I have tried <strong>Flask-Cache</strong> and <strong>redis-simple-cache</strong>.
Downside are <a href="http://pythonhosted.org/Flask-Cache/" rel="nofollow">... | 2 | 2016-08-26T06:53:55Z | 39,160,863 | <p>You can use this <a href="https://github.com/dhruvpathak/python-cache-decorator" rel="nofollow">cache decorator</a>, the cache object you create will have to be a flask cache object instead of django one i.e. should support cache.get and cache.set methods, this is pretty flexible based on how you want to create cach... | 0 | 2016-08-26T07:36:42Z | [
"python",
"caching",
"redis",
"decorator"
] |
Redis get and set decorator | 39,160,075 | <p>Currently working on python and redis. I have Flask as my framework and working on Blueprints.</p>
<p>Looking into implementing cache with redis for my APIs, I have tried <strong>Flask-Cache</strong> and <strong>redis-simple-cache</strong>.
Downside are <a href="http://pythonhosted.org/Flask-Cache/" rel="nofollow">... | 2 | 2016-08-26T06:53:55Z | 39,319,855 | <p>You seem to not have read the <a href="http://pythonhosted.org/Flask-Cache/" rel="nofollow">Flask-Cache documentation</a> very closely. Caching does <em>not</em> ignore parameters and the cache key is customisable. The decorators the project supplies already give you the functionality you seek.</p>
<p>From the <a h... | 0 | 2016-09-04T17:53:49Z | [
"python",
"caching",
"redis",
"decorator"
] |
Add parentheses to list elements - Python | 39,160,469 | <p>I would like to retrieve a set of data in a file in the form of a list.</p>
<p>The following is the data i am reading from the file which I want to add to list:</p>
<blockquote>
<h1>file input: (3,5),(5,2),(2,1),(4,2),(4,1),(3,1)</h1>
</blockquote>
<p>The following code shows what I have now:</p>
<pre><code>wi... | -3 | 2016-08-26T07:15:37Z | 39,160,498 | <pre><code>import ast
s = "(3,5),(5,2),(2,1),(4,2),(4,1),(3,1)"
>>> list(ast.literal_eval(s))
[(3, 5), (5, 2), (2, 1), (4, 2), (4, 1), (3, 1)]
</code></pre>
<p>Here is an <a href="http://stackoverflow.com/questions/15197673/using-pythons-eval-vs-ast-literal-eval">SO link</a> to <code>eval</code> vs <code>as... | 3 | 2016-08-26T07:17:16Z | [
"python",
"string",
"list",
"file"
] |
Add parentheses to list elements - Python | 39,160,469 | <p>I would like to retrieve a set of data in a file in the form of a list.</p>
<p>The following is the data i am reading from the file which I want to add to list:</p>
<blockquote>
<h1>file input: (3,5),(5,2),(2,1),(4,2),(4,1),(3,1)</h1>
</blockquote>
<p>The following code shows what I have now:</p>
<pre><code>wi... | -3 | 2016-08-26T07:15:37Z | 39,160,922 | <p>Solved it by this code, list of tuples! : </p>
<pre><code>with open('partial.txt') as f:
graph = [tuple(map(int, i.split(','))) for i in f]
print (graph)
</code></pre>
| 0 | 2016-08-26T07:40:20Z | [
"python",
"string",
"list",
"file"
] |
How can python function actually change the parameter rather than the formal parameter? | 39,160,682 | <p>I am trying to code "1024" using python basic library. In the process I try to make a list [0, 2, 4, 4] become [0, 2, 8, 0]. So here is my test code. It's very easy one.</p>
<pre><code> def merger(a, b):
if a == b:
a += b
b = 0
numlist = [0, 2, 4, 4]
merger(numlist[0], numlist[1... | 1 | 2016-08-26T07:27:27Z | 39,160,857 | <p>You can pass the list and indexes to the function:</p>
<pre><code>def merger(l, a, b):
if l[a] == l[b]:
l[a] += l[b]
l[b] = 0
numlist = [0, 2, 4, 4]
merger(numlist, 0, 1)
merger(numlist, 1, 2)
merger(numlist, 2, 3)
print(numlist)
</code></pre>
<p>As list object will be passed by reference and ... | 2 | 2016-08-26T07:36:19Z | [
"python",
"function",
"syntax"
] |
How to use multiple 'if' statements nested inside an enumerator? | 39,160,750 | <p>I have a massive string of letters all jumbled up, 1.2k lines long.
I'm trying to find a lowercase letter that has EXACTLY three capital letters on either side of it.</p>
<p>This is what I have so far</p>
<pre><code>def scramble(sentence):
try:
for i,v in enumerate(sentence):
if v.islower()... | 0 | 2016-08-26T07:31:09Z | 39,160,899 | <p>Here is a way to do it "Pythonically" without<br>
regular expressions:</p>
<pre><code>s = 'abcdEFGhIJKlmnop'
words = [s[i:i+7] for i in range(len(s) - 7) if s[i:i+3].isupper() and s[i+3].islower() and s[i+4:i+7].isupper()]
print(words)
</code></pre>
<p>And the output is:</p>
<pre><code>['EFGhIJK']
</code></pre>
... | 1 | 2016-08-26T07:39:13Z | [
"python"
] |
How to use multiple 'if' statements nested inside an enumerator? | 39,160,750 | <p>I have a massive string of letters all jumbled up, 1.2k lines long.
I'm trying to find a lowercase letter that has EXACTLY three capital letters on either side of it.</p>
<p>This is what I have so far</p>
<pre><code>def scramble(sentence):
try:
for i,v in enumerate(sentence):
if v.islower()... | 0 | 2016-08-26T07:31:09Z | 39,161,006 | <p>if you can't use regular expression</p>
<p>maybe this for loop can do the trick </p>
<pre><code>if v.islower():
if sentence[i-4].islower() and sentence[i+4].islower():
for k in range(1,4):
if sentence[i-k].islower() or sentence[i+k].islower():
break
if k == 3:
... | 1 | 2016-08-26T07:44:39Z | [
"python"
] |
How to use multiple 'if' statements nested inside an enumerator? | 39,160,750 | <p>I have a massive string of letters all jumbled up, 1.2k lines long.
I'm trying to find a lowercase letter that has EXACTLY three capital letters on either side of it.</p>
<p>This is what I have so far</p>
<pre><code>def scramble(sentence):
try:
for i,v in enumerate(sentence):
if v.islower()... | 0 | 2016-08-26T07:31:09Z | 39,161,141 | <p>regex is probably the easiest, using a modified version of @Israel Unterman's answer to account for the outside edges and non-upper surroundings the full regex might be:</p>
<pre><code>s = 'abcdEFGhIJKlmnopABCdEFGGIddFFansTBDgRRQ'
import re
words = re.findall(r'(?:^|[^A-Z])([A-Z]{3}[a-z][A-Z]{3})(?:[^A-Z]|$)', s)
... | 1 | 2016-08-26T07:52:47Z | [
"python"
] |
How to get the flag/state of current operation in Odoo 9? | 39,160,816 | <p>I am new in odoo, I want to know how we get the current flag/state of every operation.</p>
<p>For example: when we create a new record how do we know the current flag/state is "add"? or when we view a record how do we know the current flag/state is "view"? </p>
<p>It something like current user id that stored in s... | 1 | 2016-08-26T07:34:22Z | 39,180,410 | <p>There is no such thing as 'flag/state'. </p>
<p>What you are probably trying to say is that you want to know which operations are taking place on a record. The easiest method is to take a look at your log. There will be statements there in the form <code>/web/dataset/call_kw/model/operation</code> where model is yo... | 0 | 2016-08-27T11:05:30Z | [
"python",
"web",
"openerp"
] |
Putting/Updating item in DynamoDB fails for the UpdateExpression syntax | 39,161,097 | <p>I've created a DynamoDB table, and in my Python code, I have the resource initialised as follows:</p>
<pre><code>self.dynamodb = self.session.resource('dynamodb').Table('aws-ci')
</code></pre>
<p>The table has just one index/key, with the name <code>environment</code>. I am trying to <code>PUT</code> into it, an o... | 0 | 2016-08-26T07:50:14Z | 39,161,500 | <p>Have you tried this?
<a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ExpressionPlaceholders.html#ExpressionAttributeNames" rel="nofollow">http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ExpressionPlaceholders.html#ExpressionAttributeNames</a></p>
<pre><code>set_query = "SET ... | 1 | 2016-08-26T08:14:11Z | [
"python",
"amazon-web-services",
"amazon-dynamodb",
"boto",
"boto3"
] |
Querying more properties in Google Search Console via python script | 39,161,201 | <p>I am using a Python (2.7) script to download via API Google Search Console data. I would like to get rid of the property and dates arguments when launching the script:</p>
<pre><code>>python script. py ´http://www.example.com´ ´01-01-2000´ ´01-02-2000´
</code></pre>
<p>For the latter I managed to do it im... | 0 | 2016-08-26T07:56:30Z | 39,531,090 | <p>I think I can help as I had the same problem when working from the sample script given by google as guidance. Which is what I think you gotten your code from?</p>
<p>The problem is that the script uses the sample_tools.py script in the googleapiclient library, which is meant to abstract away all the authentication ... | 0 | 2016-09-16T12:06:03Z | [
"python",
"python-2.7",
"google-api",
"google-webmaster-tools",
"google-api-python-client"
] |
How to work around missing PyModule_Create2 in AMD64 Win Python35_d.lib? | 39,161,202 | <p>I'm trying to debug an extension module that worked fine in 32 bit Python 2.7, but not so fine in 64 bit Python 3.5.</p>
<p>I've used the AMD64 Web installer from Python.org, and yet in the link I get</p>
<pre><code>__imp_PyModule_Create2 (referenced in libboost_python-vc120-mt-gd-1_57.lib(module.obj))
</code></pr... | 0 | 2016-08-26T07:56:35Z | 39,198,661 | <p>I've discovered the issue here; the AMD64 factor is irrelevant.</p>
<p>The key is that the Boost Python library expects to link against the Release version of Python, even if it is the debug version of Boost Python. By trying to link an extension module that depends on Boost Python, Boost's</p>
<pre><code>config/... | 0 | 2016-08-29T04:50:45Z | [
"python"
] |
Paraview picture generation | 39,161,205 | <p>I am trying to run a python script to generate pictures.
But every time i run i get the following error.</p>
<pre><code>File "/usr2/tmp/Krishnamoorthi/case0383/New/Pics_0.py", line 16, in <module>
case_foam.SurfaceArrays = ['meshPhi', 'phi']
File "/cax/sw-cae1/OPENFOAM/LINUX_x86_64/ParaView/ParaView-4.4.0-Qt... | 0 | 2016-08-26T07:56:46Z | 39,817,906 | <p>The issue is that <code>SurfaceArrays</code> property does not exist on the <code>case_foam</code> reader instance.</p>
<p>Try opening the data data file in ParaView UI and see what properties are shown on the <code>Properties Panel</code>. There'd be some other property that should be used to select the <code>mesh... | 0 | 2016-10-02T14:18:15Z | [
"python",
"paraview"
] |
File lock (flock) compatibility between C and Python | 39,161,412 | <p>Does the python implementation of flock work transparently along with standard C libraries? If I have two programs, one in Python and the other in C, trying acquire a lock on a single file will it work?</p>
<p><strong>Quick links:</strong></p>
<ol>
<li>Python flock: <a href="https://docs.python.org/2/library/fcntl... | 1 | 2016-08-26T08:09:11Z | 39,161,454 | <p>Python's <code>fcntl</code> library is built directly on top of the standard C libraries; so on Linux <code>fcntl.flock()</code> uses the <code>flock</code> C function <em>directly</em>.</p>
<p>See the <a href="https://hg.python.org/cpython/file/2.7/Modules/fcntlmodule.c#l250" rel="nofollow">source code for the <co... | 2 | 2016-08-26T08:11:25Z | [
"python",
"c",
"linux",
"locking"
] |
How to find the position of an item of a list in python? | 39,161,431 | <p>I have two lists. The first list has a specific length and the second list has unstable length. I want to assign the items from two lists.
I use <code>colour_index = sel_pos%(len(colours))</code>. The sel_pos is the item's position from the unstable list.
How to find the position every time?</p>
| -2 | 2016-08-26T08:10:02Z | 39,161,551 | <p>Use <code>l.index(n)</code> to find index of <code>n</code> in list <code>l</code>.</p>
<pre><code>>>> x = [1,3,7]
>>> x.index(3)
1
</code></pre>
| 2 | 2016-08-26T08:17:03Z | [
"python",
"list",
"colors",
"position",
"variable-length-array"
] |
How to find the position of an item of a list in python? | 39,161,431 | <p>I have two lists. The first list has a specific length and the second list has unstable length. I want to assign the items from two lists.
I use <code>colour_index = sel_pos%(len(colours))</code>. The sel_pos is the item's position from the unstable list.
How to find the position every time?</p>
| -2 | 2016-08-26T08:10:02Z | 39,161,650 | <pre><code>colour_index = selections.index(txt)%(len(colours))
</code></pre>
| 0 | 2016-08-26T08:22:07Z | [
"python",
"list",
"colors",
"position",
"variable-length-array"
] |
How to find the position of an item of a list in python? | 39,161,431 | <p>I have two lists. The first list has a specific length and the second list has unstable length. I want to assign the items from two lists.
I use <code>colour_index = sel_pos%(len(colours))</code>. The sel_pos is the item's position from the unstable list.
How to find the position every time?</p>
| -2 | 2016-08-26T08:10:02Z | 39,162,756 | <p>You can use Index function which is get the element and return the index of it in the list:</p>
<pre><code>indexNumber = MyList.Index(Element)
</code></pre>
| 0 | 2016-08-26T09:19:22Z | [
"python",
"list",
"colors",
"position",
"variable-length-array"
] |
Regex on list element in for loop | 39,161,495 | <p>I have a script that searches through config files and finds all matches of strings from another list as follows:</p>
<pre><code>dstn_dir = "C:/xxxxxx/foobar"
dst_list =[]
files = [fn for fn in os.listdir(dstn_dir)if fn.endswith('txt')]
dst_list = []
for file in files:
parse = CiscoConfParse(dstn_dir+'/'+file)
... | 2 | 2016-08-26T08:13:31Z | 39,161,847 | <p>Strings in python are iterable, so <code>sfarm</code> is an iterable, but that has little meaning in this case. From reading what <a href="http://www.pennington.net/py/ciscoconfparse/api_CiscoConfParse.html#ciscoconfparse.CiscoConfParse.find_all_children" rel="nofollow"><code>CiscoConfParse.find_all_children()</code... | 2 | 2016-08-26T08:32:34Z | [
"python"
] |
Regex on list element in for loop | 39,161,495 | <p>I have a script that searches through config files and finds all matches of strings from another list as follows:</p>
<pre><code>dstn_dir = "C:/xxxxxx/foobar"
dst_list =[]
files = [fn for fn in os.listdir(dstn_dir)if fn.endswith('txt')]
dst_list = []
for file in files:
parse = CiscoConfParse(dstn_dir+'/'+file)
... | 2 | 2016-08-26T08:13:31Z | 39,161,912 | <p>Please check this code. Used glob module to get all "*.txt" files in folder.</p>
<p>Please check here for more info on <a href="https://pymotw.com/2/glob/" rel="nofollow">glob module</a>.</p>
<pre><code>import glob
import re
dst_list = []
search_str = ['xrout:55','old:23']
for file_name in glob.glob(r'C:/Users/din... | 1 | 2016-08-26T08:35:29Z | [
"python"
] |
collections counter python can't access the key | 39,161,593 | <p>I am using the collections counter to count each string (they might not be unique) inside lists. The problem is that now I can't access the dictionary, and I am not sure why.</p>
<p>My code is:</p>
<pre><code>from collections import Counter
result1 = Counter(list_final1) #to count strings inside list
</code></pre... | 0 | 2016-08-26T08:18:53Z | 39,161,633 | <p>Use your <code>key</code> with the variable in which you stored the value of <code>Counter</code>, in your case <code>result1</code>. Sample:</p>
<pre><code>>>> from collections import Counter
>>> my_dict = {'BAM': 44, 'CCC': 20, 'APG': 14, 'MBI': 11, 'BAV': 10}
>>> result = Counter(my_di... | 2 | 2016-08-26T08:21:33Z | [
"python",
"python-collections"
] |
python 2 stdin can't read individual lines | 39,161,608 | <p>I have the following very simple-looking code:</p>
<pre><code>from __future__ import print_function
import sys
for line in sys.stdin:
print("hello!")
sys.stdout.flush()
</code></pre>
<p>When I run it, I expect to type in a line and then immediately see <code>hello!</code> printed out after it, after which... | 0 | 2016-08-26T08:19:54Z | 39,162,912 | <p>Answer to your question is here <a href="http://stackoverflow.com/questions/107705/disable-output-buffering">Disable output buffering</a>. (4th comment of accepted answer). Your working code should be like this:</p>
<pre><code>from __future__ import print_function
import sys
while True:
line = sys.stdin.readli... | 3 | 2016-08-26T09:26:27Z | [
"python",
"io",
"buffer",
"stdin",
"python-2.x"
] |
How to keep update the files using PYTHON | 39,161,653 | <pre><code>import os
import glob
import CameraID
files = glob.glob('/tmp/image/*.png')
count = 1
while (count==1):
for image in files:
if ( not os.path.isfile(image)):
print("Error: %s file not found" %image)
else:
print("Sending file %s ..." % image)
print Came... | 1 | 2016-08-26T08:22:12Z | 39,161,992 | <p>moves the line:</p>
<pre><code>files = glob.glob('/tmp/image/*.png')
</code></pre>
<p>into the <code>while loop</code> to keep that updated</p>
| 2 | 2016-08-26T08:39:55Z | [
"python",
"python-2.7"
] |
TemplateSyntaxError at /cart/, Invalid block tag: '"cart:cart_remove"', expected 'endwith' | 39,161,736 | <p>I'm doing the webshop following the code in the book "Django by Example". I tried Google and searches in Stackoverflow but I did not find answers to this problem. </p>
<p>The product list page and the product detail page work fine but when I try to add items to the cart, the browser says:
TemplateSyntaxError at /c... | 0 | 2016-08-26T08:26:59Z | 39,161,890 | <p>The problem is not with <code>endwith</code>, but with the tag that is highlighted. <code>"cart:cart_remove"</code> is not a tag; I expect you meant to use <code>{% url "cart:cart_remove" ... %}</code> there.</p>
| 1 | 2016-08-26T08:34:24Z | [
"python",
"django"
] |
Shopify app: adding a new shipping address via webhook | 39,161,806 | <p>I'm planning to create a simple app using Django/Python that shows a nice button when installed by the store owner on user's account.</p>
<p>Clicking on that button should trigger a webhook request to our servers that would send back the generated shipping address for the user.</p>
<p>My questions:</p>
<ol>
<li>I... | 0 | 2016-08-26T08:30:33Z | 39,170,945 | <p>Here is the recipe:</p>
<ul>
<li>create a Proxy in your App to accept incoming Ajax call from customer</li>
<li>create a form and button in customer liquid that submits to your Proxy</li>
<li>in the App Proxy, validate the call from Shopify and when valid, look for your form params. </li>
<li>open the customer reco... | 0 | 2016-08-26T16:35:56Z | [
"python",
"django",
"shopify"
] |
FileNotFoundError: [Errno 2] No such file or directory in Pycharm | 39,161,868 | <p>I'm pretty new with Python and finding some issues on a trivial code.
I'm using Pycharm together with Anaconda. </p>
<p>This is my code: </p>
<pre><code>posSentences = open('rt-polarity-pos.txt', 'r')
print (posSentences.read())
</code></pre>
<p>There is no issue in reading the file and printing it out when runn... | 0 | 2016-08-26T08:33:29Z | 39,161,923 | <p>Python interpreter is run from <code>Desktop\textan</code> but the file is in <code>Desktop\textan\textan\</code> directory, so the path to the file in python code becomes <code>textan\rt...txt</code></p>
| 0 | 2016-08-26T08:36:11Z | [
"python",
"pycharm",
"anaconda"
] |
Writing a line of row per iteration to file without overwriting the file in python | 39,161,959 | <p>I have searched this on Stackoverflow and all of the "duplicates" for this topic but it seems remained unanswered. I have tried all these:</p>
<p><strong>Attempt#1:</strong></p>
<pre><code>for word in header:
writer.writerow([word]
</code></pre>
<p><em>Pasted from <a href="http://stackoverflow.com/questions/1... | -1 | 2016-08-26T08:38:03Z | 39,162,141 | <pre><code>data = [1,2,3,4,5]
with open('asd.txt', 'w') as fn:
for i in data:
fn.write(str(i) + '\n') # Add a \n (newline) so the next write will occure in the next line
</code></pre>
<p>Content of <code>asd.txt</code>:</p>
<pre><code>1
2
3
4
5
</code></pre>
<p>If you want to append to a file use <code>w... | 0 | 2016-08-26T08:47:54Z | [
"python",
"python-2.7"
] |
Writing a line of row per iteration to file without overwriting the file in python | 39,161,959 | <p>I have searched this on Stackoverflow and all of the "duplicates" for this topic but it seems remained unanswered. I have tried all these:</p>
<p><strong>Attempt#1:</strong></p>
<pre><code>for word in header:
writer.writerow([word]
</code></pre>
<p><em>Pasted from <a href="http://stackoverflow.com/questions/1... | -1 | 2016-08-26T08:38:03Z | 39,162,677 | <p>There is 2 ways to do that:</p>
<p>First by adding '\n' character at the end of your output line :</p>
<pre><code>for x in row:
writer.write(x + "\n")
</code></pre>
<p>Second by opening file in Append mode, it is going to add lines existing text file but be careful.it's not overwrite the file :</p>
<pre><code... | 0 | 2016-08-26T09:14:53Z | [
"python",
"python-2.7"
] |
Mysql fails to run after reboot using crontab | 39,161,966 | <p>I have made a script which saves data to Mysql database using mysqldp and python. When I run script from console (python myscript.py) it works, but when I run it on reboot using Crontab I get an email with following error:</p>
<blockquote>
<p><strong>_mysql_exceptions.OperationalError: (2002, "Can't connect to lo... | -2 | 2016-08-26T08:38:24Z | 39,165,472 | <p>Thanks to Shadow's hint I have solved the problem.
I just have started the <strong>Mysql</strong> server manually from the script and now it works.</p>
<p>I have used this command to start the server</p>
<blockquote>
<p><strong>from subprocess import call</strong></p>
<p><strong>call(['sudo','service','mysq... | 0 | 2016-08-26T11:42:10Z | [
"python",
"mysql",
"crontab"
] |
MDM server - M2Crypto: undefined symbol: SSLv2_method | 39,161,999 | <p>I have downloaded a code from <a href="https://github.com/project-imas/mdm-server.git" rel="nofollow">GitHub</a>. I tried to run that code in my linux machine and i have installed all required libraries.But the code is not working and displaying the following error. Please help me to get out of this problem.I will b... | 0 | 2016-08-26T08:40:24Z | 39,519,917 | <p>Although <a href="http://stackoverflow.com/a/11072709/780190">this</a> answer suggests a patch for <code>M2Crypto-0.21.1</code>, it never worked for me.<br>
By default ubuntu has <code>openssl</code> built without <code>SSLv2</code> support as <a href="http://stackoverflow.com/a/8219807/780190">explained here</a>, I... | 0 | 2016-09-15T20:34:22Z | [
"python",
"mdm",
"m2crypto"
] |
Python readinto: How to convert from an array.array to a custom ctype structure | 39,162,028 | <p>I have created an array of integers and I would like them to be interpreted by the structure definition which I have created</p>
<pre><code>from ctypes import *
from array import array
class MyStruct(Structure):
_fields_ = [("init", c_uint),
("state", c_char),
("constant", c_int... | 0 | 2016-08-26T08:41:59Z | 39,162,081 | <p>Does this have to be an array? could you use a list maybe? you can unpack from a list in to a function you can use the * operator:</p>
<p>mystr = MyStruct(*arr)</p>
<p>or a dict with:</p>
<p>mystr = MyStruct(**arr)</p>
| 0 | 2016-08-26T08:45:02Z | [
"python",
"arrays",
"ctypes",
"python-2.x"
] |
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