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 Create a file at a specific path in python? | 39,853,660 | <p>I am writing below code which is not working:</p>
<pre><code>cwd = os.getcwd()
print (cwd)
log = path.join(cwd,'log.out')
os.chdir(cwd) and Path(log.out).touch() and os.chmod(log.out, 777)
</code></pre>
<p>how can I create a log.out into cwd ?</p>
| 0 | 2016-10-04T13:29:23Z | 39,853,849 | <p>you can call the usual linux <code>touch</code> command via <code>subprocess</code></p>
<pre><code>import subprocess
subprocess.call(["touch", cwd+"/log.out"])
</code></pre>
| 0 | 2016-10-04T13:38:32Z | [
"python"
] |
How to Create a file at a specific path in python? | 39,853,660 | <p>I am writing below code which is not working:</p>
<pre><code>cwd = os.getcwd()
print (cwd)
log = path.join(cwd,'log.out')
os.chdir(cwd) and Path(log.out).touch() and os.chmod(log.out, 777)
</code></pre>
<p>how can I create a log.out into cwd ?</p>
| 0 | 2016-10-04T13:29:23Z | 39,853,906 | <p>To create an empty file:</p>
<pre><code>import os
cwd = os.getcwd()
os.chdir(cwd)
filename = 'log.out'
with open(os.path.join(cwd, filename), 'wb') as f:
f.write('')
os.chmod(filename, 777)
</code></pre>
<p>This will create an empty file called <code>log.out</code>, which of course will be content-empty, bu... | 0 | 2016-10-04T13:41:44Z | [
"python"
] |
Is the index_db method from the SeqIO object in Biopython slow? | 39,853,677 | <p>I've got this:</p>
<pre><code>files = glob.glob(str(dir_path) + "*.fa")
index = SeqIO.index_db(index_filename, files, "fasta")
seq = index[accession] # Slow
index.close()
return seq
</code></pre>
<p>and i'm working on big files (gene sequences) but for some reasons, it takes about 4 secondes to get the sequence ... | 0 | 2016-10-04T13:30:08Z | 39,856,519 | <p>The first time the database is created it can take some time. The next times, if you don't delete the <code>index_filename</code> created, it should go faster.</p>
<p>Lets say you have your 25 files each with some genes. This method creates a SQLite DB that helps locating the sequences among the files, like "Get me... | 1 | 2016-10-04T15:41:17Z | [
"python",
"biopython"
] |
Setting values in one dataframe from the boolean values in another | 39,853,718 | <p>I have a MWE that can be reproduced with the following code:</p>
<pre><code>import pandas as pd
a = pd.DataFrame([[1,2],[3,4]], columns=['A', 'B'])
b = pd.DataFrame([[True,False],[False,True]], columns=['A', 'B'])
</code></pre>
<p>Which creates the following dataframes:</p>
<pre><code>In [8]: a
Out[8]:
A B
0... | 1 | 2016-10-04T13:32:01Z | 39,853,737 | <p>If need replace <code>False</code> to <code>NaN</code>:</p>
<pre><code>print (a[b])
A B
0 1.0 NaN
1 NaN 4.0
</code></pre>
<p>or:</p>
<pre><code>print (a.where(b))
A B
0 1.0 NaN
1 NaN 4.0
</code></pre>
<p>and if need replace <code>True</code> to <code>NaN</code>:</p>
<pre><code>print (a[~... | 1 | 2016-10-04T13:32:59Z | [
"python",
"pandas",
"indexing",
"dataframe",
"boolean"
] |
Python script to check dir not working | 39,853,801 | <p>I am stuck with my script at a point. The script is this</p>
<pre><code>import subprocess
import os
def Windows():
SW_MINIMIZE = 6
info = subprocess.STARTUPINFO()
info.dwFlags = subprocess.STARTF_USESHOWWINDOW
info.wShowWindow = SW_MINIMIZE
print(os.path.isdir("C:\Program Files (x86)"))
whil... | 0 | 2016-10-04T13:36:05Z | 39,853,913 | <p>for creating the path use the built-ins python functions that won't mess up the path</p>
<pre><code>if os.path.exists(os.path.join('C:', os.path.sep(), 'Program Files')):
# do your stuff
</code></pre>
| -1 | 2016-10-04T13:42:06Z | [
"python",
"python-2.7",
"subprocess"
] |
Python script to check dir not working | 39,853,801 | <p>I am stuck with my script at a point. The script is this</p>
<pre><code>import subprocess
import os
def Windows():
SW_MINIMIZE = 6
info = subprocess.STARTUPINFO()
info.dwFlags = subprocess.STARTF_USESHOWWINDOW
info.wShowWindow = SW_MINIMIZE
print(os.path.isdir("C:\Program Files (x86)"))
whil... | 0 | 2016-10-04T13:36:05Z | 39,854,038 | <p>You're not actually checking if <code>os.path.isdir("C:\Program Files (x86)")</code>. You're just printing it.</p>
<p>Instead of </p>
<pre><code>print(os.path.isdir("C:\Program Files (x86)"))
while True:
</code></pre>
<p>You need to do</p>
<pre><code>if os.path.isdir(r"C:\Program Files (x86)"):
</code></pre>
<p... | 1 | 2016-10-04T13:47:30Z | [
"python",
"python-2.7",
"subprocess"
] |
Django Form Error: 'QueryDict' object has no attribute 'method' when POST assigned | 39,853,857 | <p>I'm having trouble with a specific form that is not permitting me to post data to a function I've defined. I'm very confused as to why this is giving me errors because I use an almost identical form to do another action in the same website.</p>
<p>When I post this data, Django throws "'QueryDict' object has no attr... | 0 | 2016-10-04T13:38:51Z | 39,854,018 | <p>The error is in this line</p>
<pre><code>...
def cancel(request):
if request.method == "POST":
form = cancel(request.POST or None) # you call the function, its the same name, you would call your cancelform
if form.is_valid():
response = cancel(request.session['token'],form.cleaned_da... | 1 | 2016-10-04T13:46:38Z | [
"python",
"django",
"forms"
] |
how to check if date is in certain interval python? | 39,853,900 | <p>I'm importing dates from yahoo finance and want to transform them in a format so that I can compare them with today to check if the date is between 3 and 9 months from now.</p>
<p>Here is what I have so far:</p>
<pre><code>today = time.strftime("%Y-%m-%d")
today = datetime.datetime.strptime(today, '%Y-%m-%d')
int_... | 0 | 2016-10-04T13:41:21Z | 39,854,156 | <p>You're using <code>transf_date = datetime.datetime.strptime(opt["Expiry"][1],'%b %d, %Y')</code> instead of <code>transf_date = datetime.datetime.strptime(opt["Expiry"][i],'%b %d, %Y')</code>, meaning that even though you're iterating over the entire <code>opt["Expiry"]</code>, you're always processing the same entr... | 1 | 2016-10-04T13:53:12Z | [
"python",
"datetime"
] |
Diff commit messages of two branches with gitpython | 39,854,111 | <p>At work, we have a workflow where each branch is "named" by date. During the week, at least once, the latest branch gets pushed to production. What we require now is the summary/commit messages of the changes between the latest branch in production vs the new branch via gitpython.</p>
<p>What I have tried to do:</p... | 0 | 2016-10-04T13:50:54Z | 39,856,321 | <p>I figured it out:</p>
<pre><code>import git
g = git.Git(repoPath+repoName)
g.pull()
commitMessages = g.log('%s..%s' % (oldBranch, newBranch), '--pretty=format:%ad %an - %s', '--abbrev-commit')
</code></pre>
<p>Reading through the Git documentation I found that I can compare two branches with this syntax <code>B1.... | 0 | 2016-10-04T15:30:39Z | [
"python",
"git-commit",
"git-log",
"gitpython"
] |
proxy error when using flask as a simple http proxy | 39,854,217 | <p>There my code:</p>
<p>main.py:</p>
<pre><code>from flask import Flask, request, Response
import requests
app = Flask(__name__)
@app.before_request
def before_request():
url = request.url
method = request.method
data = request.get_data()
headers = dict()
for name, value in request.headers:
... | -1 | 2016-10-04T13:56:10Z | 39,866,791 | <p>Yes, it fails to connect to the proxy(127.0.0.1:6666)</p>
| 0 | 2016-10-05T06:24:59Z | [
"python",
"flask",
"python-requests"
] |
python ObjectListView negate filter | 39,854,298 | <p>I need some help with negate this filter for the ObjectListView.</p>
<pre><code>def addFilter(self, text):
# OLV.Filter.Predicate()
meter_flt = OLV.Filter.TextSearch(self, text=text)
self.SetFilter(meter_flt)
</code></pre>
<p>This works great, but if i try to filter like "chicken" then it's only show c... | 0 | 2016-10-04T13:59:31Z | 39,872,312 | <p>You can use <a href="http://objectlistview.sourceforge.net/python/features.html#filtering" rel="nofollow"><code>Filter.Predicate</code></a></p>
<blockquote>
<p>Filter.Predicate(booleanCallable) Show only the model objects for
which the given callable returns true. The callable must accept a
single parameter, ... | 0 | 2016-10-05T11:06:54Z | [
"python",
"wxpython",
"filtering",
"objectlistview",
"objectlistview-python"
] |
select name where id = "in the python list"? | 39,854,306 | <p>Let's say i have a python list of customer id like this:</p>
<pre><code>id = ('12','14','15','11',.......)
</code></pre>
<p>the array has 1000 values in it, and i need to insert the customer name to a table based on the ids from the list above.</p>
<p>my code is like:</p>
<pre><code>ids = ",".join(id)
sql = "ins... | 0 | 2016-10-04T13:59:53Z | 39,854,358 | <p>You need to format the string.</p>
<pre><code>ids = ",".join(id)
sql = "insert into cust_table(name)values(names)where cust_id IN('{ids}')"
cursor.execute(sql.format(ids= ids))
</code></pre>
| 0 | 2016-10-04T14:02:07Z | [
"python",
"mysql"
] |
select name where id = "in the python list"? | 39,854,306 | <p>Let's say i have a python list of customer id like this:</p>
<pre><code>id = ('12','14','15','11',.......)
</code></pre>
<p>the array has 1000 values in it, and i need to insert the customer name to a table based on the ids from the list above.</p>
<p>my code is like:</p>
<pre><code>ids = ",".join(id)
sql = "ins... | 0 | 2016-10-04T13:59:53Z | 39,855,021 | <p>Simply writing the name of a variable into a string doesn't magically make its contents appear in the string.</p>
<pre><code>>>> p = 'some part'
>>> s = 'replace p of a string'
>>> s
'replace p of a string'
>>> s = 'replace %s of a string' % p
>>> s
'replace some part of... | 0 | 2016-10-04T14:32:59Z | [
"python",
"mysql"
] |
Pandas time series comparison with missing data/records | 39,854,373 | <p>This question is somewhat related to an earlier question from me (<a href="http://stackoverflow.com/questions/38658811/remapping-numpy-array-with-missing-values">Remapping `numpy.array` with missing values</a>), where I was struggling with time series with missing data, and someone suggested <em>"use Pandas!"</em>. ... | 2 | 2016-10-04T14:02:34Z | 39,866,299 | <p>One method (based on this: <a href="http://stackoverflow.com/a/34985243/3581217">http://stackoverflow.com/a/34985243/3581217</a> answer) which seems to work is to create a <code>Dataframe</code> where the observations from the different sites have different columns, then a <code>dropna()</code> with <code>subset</co... | 0 | 2016-10-05T05:50:01Z | [
"python",
"pandas",
"time-series"
] |
Cannot access elements in a list in Python | 39,854,455 | <p>I working with bigrams and unigrams. </p>
<p>My bigrams are a counter of tuples and my unigrams are a list, where </p>
<pre><code> uni['some key']=count
</code></pre>
<p>I am trying to do the follwing</p>
<pre><code> for b,countB in bigrams.most_common()
key=b[0] # this is guaranteed to be a key for my uni... | 1 | 2016-10-04T14:06:29Z | 39,854,538 | <p>You are making the mistake of using a tuple when you perhaps need a dictionary. As the error message state, tuples cannot be indexed by a string key - you are expected to use numeric indices.</p>
<p>A dict will let you use string keys as you appear to want to.</p>
<pre><code>d = {}
d['some key] = 23
</code></pre>
... | 3 | 2016-10-04T14:10:03Z | [
"python",
"nlp",
"tuples",
"n-gram"
] |
Cannot access elements in a list in Python | 39,854,455 | <p>I working with bigrams and unigrams. </p>
<p>My bigrams are a counter of tuples and my unigrams are a list, where </p>
<pre><code> uni['some key']=count
</code></pre>
<p>I am trying to do the follwing</p>
<pre><code> for b,countB in bigrams.most_common()
key=b[0] # this is guaranteed to be a key for my uni... | 1 | 2016-10-04T14:06:29Z | 39,855,739 | <p>I have executed your code with <code>corpus = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore"</code> since you said the error was a related to <code>uni</code> being a tuple but it actually is a dictionary.</p>
<p>The error I got is different, it is a <code>KeyE... | 0 | 2016-10-04T15:03:40Z | [
"python",
"nlp",
"tuples",
"n-gram"
] |
Cannot access elements in a list in Python | 39,854,455 | <p>I working with bigrams and unigrams. </p>
<p>My bigrams are a counter of tuples and my unigrams are a list, where </p>
<pre><code> uni['some key']=count
</code></pre>
<p>I am trying to do the follwing</p>
<pre><code> for b,countB in bigrams.most_common()
key=b[0] # this is guaranteed to be a key for my uni... | 1 | 2016-10-04T14:06:29Z | 39,856,117 | <p>I tried your code and got a <code>KeyError: ''</code> which happens because your initial bigram has an empty string at position 0 and <code>''</code> is not in your unigrams dictionary. I didn't see a <code>TypeError</code> so that may be from somewhere else in your code. </p>
<p>That said, various other comments: ... | 1 | 2016-10-04T15:20:20Z | [
"python",
"nlp",
"tuples",
"n-gram"
] |
Python | delimited text file to csv format | 39,854,482 | <p>I'm new to python but I'm having trouble reading a text file which contains data separated by "|" as the delimiter. How would I separate the file into columns in a CSV format.</p>
<pre><code>import csv
my_file_name = "NVG.txt"
cleaned_file = "cleanNVG.csv"
with open(my_file_name, 'r') as infile, open(cleaned_file,... | 0 | 2016-10-04T14:07:35Z | 39,854,561 | <p>The simplest way with your code would be to replace "|" with "," rather than removing "|"<br /></p>
<pre><code>data = data.replace("|", ",")
</code></pre>
| 1 | 2016-10-04T14:11:17Z | [
"python",
"python-3.x"
] |
Python | delimited text file to csv format | 39,854,482 | <p>I'm new to python but I'm having trouble reading a text file which contains data separated by "|" as the delimiter. How would I separate the file into columns in a CSV format.</p>
<pre><code>import csv
my_file_name = "NVG.txt"
cleaned_file = "cleanNVG.csv"
with open(my_file_name, 'r') as infile, open(cleaned_file,... | 0 | 2016-10-04T14:07:35Z | 39,854,583 | <p>You're importing the <code>csv</code> module, but aren't using it. Make use of <a href="https://docs.python.org/2/library/csv.html#csv.reader" rel="nofollow"><code>csv.reader</code></a></p>
<pre><code>with open(my_file_name, 'r') as infile, open(cleaned_file, 'w') as outfile:
reader = csv.reader(infile, delimit... | 1 | 2016-10-04T14:12:27Z | [
"python",
"python-3.x"
] |
Python | delimited text file to csv format | 39,854,482 | <p>I'm new to python but I'm having trouble reading a text file which contains data separated by "|" as the delimiter. How would I separate the file into columns in a CSV format.</p>
<pre><code>import csv
my_file_name = "NVG.txt"
cleaned_file = "cleanNVG.csv"
with open(my_file_name, 'r') as infile, open(cleaned_file,... | 0 | 2016-10-04T14:07:35Z | 39,854,585 | <p>The <a href="https://docs.python.org/3/library/csv.html#csv.reader" rel="nofollow"><code>csv</code> module</a> allows you to read csv files with practically arbitrary delimiters.</p>
<pre><code>with open(my_file_name, 'r', newline='') as infile:
for line in csv.reader(infile, delimiter='|'):
# do stuff
... | 5 | 2016-10-04T14:12:30Z | [
"python",
"python-3.x"
] |
Python: write numpy array (int) to binary file without padding | 39,854,637 | <p>I have a binary file that was created in Fortran consisting of integer values as records. I want to read these into Python, edit them as lists and save them back to binary as np-arrays. For some reason, however, Python inserts an additional "0" after every record in the file. I guess this is what they call "padding"... | 0 | 2016-10-04T14:14:51Z | 39,855,050 | <p>Check <code>content.dtype</code>. It looks like it is <code>np.int32</code>, which is generally the default integer type on Windows. You are writing 32 bit integers, but then trying to read them back as 16 bit integers. So every other value in the result is 0.</p>
| 1 | 2016-10-04T14:34:12Z | [
"python",
"python-2.7",
"numpy",
"io",
"binary"
] |
peewee DateField property is None with MySQL database | 39,854,677 | <p>Via <code>pwiz</code> on my MySQL database, I get:</p>
<pre><code>class BaseModel(Model):
class Meta:
database = database
class Pub(BaseModel):
...
author = TextField(null=True)
...
publish_date = DateField(null=True)
...
</code></pre>
<p>Then, when iterating <code>entry in Pub.sel... | 1 | 2016-10-04T14:16:54Z | 39,868,401 | <p>This is a <a href="https://github.com/PyMySQL/PyMySQL/issues/520" rel="nofollow">problem/bug in pymysql</a> although it is not clear yet how pymysql should handle it.</p>
<p>For now, this monkey-patch-method fixes the problem to some degree; it will return the date as a string if it is not representable as a <code>... | 0 | 2016-10-05T07:57:30Z | [
"python",
"mysql",
"peewee"
] |
Is there any way to generate list exponentially in Python? | 39,854,722 | <p>I have a dictionary:</p>
<p>D = {1:[1,2,3], 2:[4,5], 3: [6,7]}</p>
<p>What I wish to do is to find all 3*2*2 combinations,</p>
<pre><code> [[1,4,6], [1,4,7],
[1,5,6], [1,5,7],
[2,4,6], [2,4,6],
[2,5,6], [2,5,7],
[3,4,6], [3,4,7],
[3,5,6], [3,5,7] ]
</code></pre>
<p>Is there any way, just doing loop like</p>... | 0 | 2016-10-04T14:18:54Z | 39,854,776 | <p>Use <a href="https://docs.python.org/3/library/itertools.html#itertools.product"><strong><code>itertools.product</code></strong></a>:</p>
<pre><code>itertools.product(*D.values())
</code></pre>
<p>Example:</p>
<pre><code>>>> import itertools
>>> D = {1:[1,2,3], 2:[4,5], 3: [6,7]}
>>> li... | 6 | 2016-10-04T14:21:47Z | [
"python",
"list",
"hashtable"
] |
Access nested key-values in Python dictionary | 39,854,726 | <p>I have the following dictionary structure and Iam trying to access the <code>total_payments</code> field. It is like accessing key of keys in Python dictionary:</p>
<pre><code>d = {'METTS MARK': {'bonus': 600000,
'deferral_payments': 'NaN',
'deferred_income': 'NaN',
'director_fee... | -3 | 2016-10-04T14:19:14Z | 39,854,812 | <p>Hard to read your dictionary, but there's an example:</p>
<pre><code>dic = {'abc': {'123': '2'}}
print(dic['abc']['123'])
#prints 2
</code></pre>
<p>and if your dictionary had two sub dictionaries: </p>
<pre><code>dic = {'abc': [{'123': '2'}, {'456': '4'}]}
print(dic['abc'][1]['456'])
# prints 4
</code></pre>
<... | 1 | 2016-10-04T14:23:32Z | [
"python",
"dictionary"
] |
Access nested key-values in Python dictionary | 39,854,726 | <p>I have the following dictionary structure and Iam trying to access the <code>total_payments</code> field. It is like accessing key of keys in Python dictionary:</p>
<pre><code>d = {'METTS MARK': {'bonus': 600000,
'deferral_payments': 'NaN',
'deferred_income': 'NaN',
'director_fee... | -3 | 2016-10-04T14:19:14Z | 39,854,852 | <p>It rather seems that values of your dictionay are dict, and not that the keys are dict.
So you can just access as follows:</p>
<pre><code>your_dict[KEY1]['total_payments']
</code></pre>
<p>Please also anonymize the email address in your example.</p>
| 1 | 2016-10-04T14:24:59Z | [
"python",
"dictionary"
] |
find index of equal values in an array | 39,854,834 | <p>So I have an array that I read from a file with several numbers. I need to find all the indices of the array equal to a certain value, and I do it in a loop (it's different values each time). It works perfect if I do it one by one, but when I do the loop, I get 0 matches in some cases, and I know the answer shouldn'... | -4 | 2016-10-04T14:24:06Z | 39,855,424 | <p>Is this what you want, getting all indices of a value from a list through iteration:</p>
<pre><code>mg = # some value
start = lst.index(mg)
# first occurrence of mg
print (start)
for i in range(lst.count(mg)-1):
start += lst[start+1:].index(mg)+1
print (start)
</code></pre>
<p>This will return all indices of <... | 0 | 2016-10-04T14:50:22Z | [
"python"
] |
Does this method returns a url? | 39,854,945 | <p>Sorry, I'm learning so forgive me if this is a stupid question.
I got this method (updated):</p>
<pre><code> def get_photo(self, photo_reference):
print(self.photourl)
print(photo_reference)
resp = requests.get(
url='{}{}'.format(self.photourl, photo_reference),
params={'key': self.ap... | 0 | 2016-10-04T14:29:11Z | 39,856,880 | <p>Maybe try this (Based on your seemingly preferred approach above of building the URL yourself):</p>
<pre><code>def get_photo(self, photo_reference):
request_url = (self.place_detail_url + self.ref + photo_reference + '&key=' + self.api_key)
output_file = (/path/to/image/here/file.png)
with open(outp... | 0 | 2016-10-04T15:58:27Z | [
"python",
"json",
"url",
"request",
"google-places-api"
] |
Does this method returns a url? | 39,854,945 | <p>Sorry, I'm learning so forgive me if this is a stupid question.
I got this method (updated):</p>
<pre><code> def get_photo(self, photo_reference):
print(self.photourl)
print(photo_reference)
resp = requests.get(
url='{}{}'.format(self.photourl, photo_reference),
params={'key': self.ap... | 0 | 2016-10-04T14:29:11Z | 39,868,670 | <p>I got my answer, <code>resp</code> is a object and according to HTTP status 200, my URL is good. So I just need to do <code>return resp.url</code> to get the right URL link. It's a small problem but I made it big. Sorry and thank you to all your answer!</p>
| 0 | 2016-10-05T08:12:56Z | [
"python",
"json",
"url",
"request",
"google-places-api"
] |
how i can go in admin panel is it possible when use sqlite | 39,854,974 | <p>I'm trying to access the sqlite admin at <a href="http://127.0.0.1:8000/admin" rel="nofollow">http://127.0.0.1:8000/admin</a>, but I don't know the user and pass. During <strong>python manage.py migrate</strong>, it did not ask about new user. </p>
<p>Config:</p>
<pre><code>DATABASES = {
'default': {
'ENGINE'... | 0 | 2016-10-04T14:30:35Z | 39,855,151 | <p>Run <code>python manage.py createsuperuser</code> and create Django administrator first. Then you will be able to log-in to admin site using this account.</p>
| 2 | 2016-10-04T14:38:48Z | [
"python",
"django",
"sqlite"
] |
issue with count variable in Python while loop | 39,855,020 | <p>I have an array of values:</p>
<pre><code>increase_pop = [500, -300, 200, 100]
</code></pre>
<p>I am trying to find the index of the lowest and highest values. Most of my code works and everything seems to be going well except for one problem. The rest of my code looks like the following:</p>
<pre><code>max_value... | 0 | 2016-10-04T14:32:53Z | 39,855,084 | <p><code>max_year</code> is assigned when the first <code>if</code> conditional is satisfied. But if that never happens, <code>max_year</code> will never be assigned. That situation will occur when <code>increase_pop[0]</code> (and hence the initial value of <code>max_value</code>) is the largest value in <code>incre... | 2 | 2016-10-04T14:35:29Z | [
"python",
"loops"
] |
issue with count variable in Python while loop | 39,855,020 | <p>I have an array of values:</p>
<pre><code>increase_pop = [500, -300, 200, 100]
</code></pre>
<p>I am trying to find the index of the lowest and highest values. Most of my code works and everything seems to be going well except for one problem. The rest of my code looks like the following:</p>
<pre><code>max_value... | 0 | 2016-10-04T14:32:53Z | 39,855,178 | <p>You can make your codes more pythonic by using the feature of list:</p>
<pre><code>min_value = min(increase_pop)
max_value = max(increase_pop)
min_value_index = increase_pop.index(min_value)
max_value_index = increase_pop.index(max_value)
</code></pre>
| 2 | 2016-10-04T14:40:07Z | [
"python",
"loops"
] |
matplotlib selecting wrong font style/weight | 39,855,124 | <p>I want to change the default font used in matplotlib plots to be Segoe UI under Windows. I can do so by altering <code>rcParams</code> like so</p>
<pre><code>import matplotlib
matplotlib.rcParams['font.family'] = 'sans-serif'
matplotlib.rcParams['font.sans-serif'] = ['Segoe UI'] + matplotlib.rcParams['font.sans-ser... | 0 | 2016-10-04T14:37:00Z | 39,858,940 | <p>It seems that matplotlib selects out of all the "Segoe UI" fonts the bold one for no reason. I fear that you cannot do much about this on the rcParams level.</p>
<p>If someone finds a solution to this issue I'd really appreciate it as well. </p>
<p>Until then, here is a workaround using the <code>fontproperties</c... | 1 | 2016-10-04T18:03:28Z | [
"python",
"matplotlib",
"fonts"
] |
Repeating characters results in wrong repetition counts | 39,855,170 | <p>My function looks like this:</p>
<pre><code>def accum(s):
a = []
for i in s:
b = s.index(i)
a.append(i * (b+1))
x = "-".join(a)
return x.title()
</code></pre>
<p>with the expected input of:</p>
<pre><code>'abcd'
</code></pre>
<p>the output should be and is:</p>
<pre><code>'A-Bb-C... | 0 | 2016-10-04T14:39:43Z | 39,855,231 | <p>Don't use <code>str.index()</code>, it'll return the <em>first match</em>. Since <code>c</code> and <code>b</code> and a appear early in the string you get <code>2</code>, <code>1</code> and <code>0</code> back regardless of the position of the <em>current</em> letter.</p>
<p>Use the <a href="https://docs.python.or... | 2 | 2016-10-04T14:42:53Z | [
"python"
] |
Repeating characters results in wrong repetition counts | 39,855,170 | <p>My function looks like this:</p>
<pre><code>def accum(s):
a = []
for i in s:
b = s.index(i)
a.append(i * (b+1))
x = "-".join(a)
return x.title()
</code></pre>
<p>with the expected input of:</p>
<pre><code>'abcd'
</code></pre>
<p>the output should be and is:</p>
<pre><code>'A-Bb-C... | 0 | 2016-10-04T14:39:43Z | 39,855,242 | <p>This is because <code>s.index(a)</code> returns the first index of the character. You can use <code>enumerate</code> to pair elements to their indices:</p>
<p>Here is a Pythonic solution:</p>
<pre><code>def accum(s):
return "-".join(c*(i+1) for i, c in enumerate(s)).title()
</code></pre>
| 2 | 2016-10-04T14:43:14Z | [
"python"
] |
Repeating characters results in wrong repetition counts | 39,855,170 | <p>My function looks like this:</p>
<pre><code>def accum(s):
a = []
for i in s:
b = s.index(i)
a.append(i * (b+1))
x = "-".join(a)
return x.title()
</code></pre>
<p>with the expected input of:</p>
<pre><code>'abcd'
</code></pre>
<p>the output should be and is:</p>
<pre><code>'A-Bb-C... | 0 | 2016-10-04T14:39:43Z | 39,855,290 | <p>simple:</p>
<pre><code>def accum(s):
a = []
for i in range(len(s)):
a.append(s[i]*(i+1))
x = "-".join(a)
return x.title()
</code></pre>
| 0 | 2016-10-04T14:45:24Z | [
"python"
] |
How to implement momentum-based stochastic gradient descent (SGD) | 39,855,184 | <p>I am using the python code network3.py (<a href="http://neuralnetworksanddeeplearning.com/chap6.html" rel="nofollow">http://neuralnetworksanddeeplearning.com/chap6.html</a>) for developing convolutional neural networks. Now I want to modify the code a little bit by adding a momentum learning rule as follows:</p>
<p... | 0 | 2016-10-04T14:40:32Z | 39,855,990 | <p>I have only ever coded up SDG from scratch (not using theano), but judging from your code you need to </p>
<p>1) initiate the <code>velocities</code> with a bunch of zeros (one per gradient),</p>
<p>2) include the velocity in your updates; something like </p>
<pre><code>updates = [(param, param-eta*grad +momentum... | 1 | 2016-10-04T15:15:14Z | [
"python",
"momentum"
] |
Looking to emulate the functionality of socat in Python | 39,855,187 | <p>I need to send a string to a particular port on localhost using python.</p>
<p>I can achieve this by using socat on the command line like such:</p>
<pre><code>cat <text file containing string to send> | socat stdin tcp-connect:127.0.0.1:55559
</code></pre>
<p>I don't want to run the socat command as a subco... | 0 | 2016-10-04T14:40:50Z | 39,856,617 | <p>According to <a href="https://linux.die.net/man/1/socat" rel="nofollow">the socat man page</a>,</p>
<blockquote>
<p>When one channel has reached EOF, the write part of the other channel is shut down. Then, socat waits <code>timeout</code> seconds before terminating. Default is 0.5 seconds. </p>
</blockquote>
<p>... | 0 | 2016-10-04T15:46:12Z | [
"python",
"socketserver",
"socat"
] |
Looking to emulate the functionality of socat in Python | 39,855,187 | <p>I need to send a string to a particular port on localhost using python.</p>
<p>I can achieve this by using socat on the command line like such:</p>
<pre><code>cat <text file containing string to send> | socat stdin tcp-connect:127.0.0.1:55559
</code></pre>
<p>I don't want to run the socat command as a subco... | 0 | 2016-10-04T14:40:50Z | 39,857,096 | <p>You shall never close a socket immediately after writing into a socket: the close could swallow still unsent data.</p>
<p>The correct workflow is what is called a <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/ms738547%28v=vs.85%29.aspx" rel="nofollow">graceful shutdown</a>:</p>
<ul>
<li>the par... | 0 | 2016-10-04T16:09:26Z | [
"python",
"socketserver",
"socat"
] |
Looking to emulate the functionality of socat in Python | 39,855,187 | <p>I need to send a string to a particular port on localhost using python.</p>
<p>I can achieve this by using socat on the command line like such:</p>
<pre><code>cat <text file containing string to send> | socat stdin tcp-connect:127.0.0.1:55559
</code></pre>
<p>I don't want to run the socat command as a subco... | 0 | 2016-10-04T14:40:50Z | 39,875,265 | <p>Turned out to be something really simple. The string I was sending using socat (which the server was receiving and processing successfully) had a newline on the end of it. The string I was sending over the python socket didn't have a new line. After adding a new line to the end of the python script the server receiv... | 0 | 2016-10-05T13:26:33Z | [
"python",
"socketserver",
"socat"
] |
Why round(4.5) == 4 and round(5.5) == 6 in Python 3.5? | 39,855,258 | <p>Looks like both 4.5 and 5.5 have exact float representations in Python 3.5:</p>
<pre><code>>>> from decimal import Decimal
>>> Decimal(4.5)
Decimal('4.5')
>>> Decimal(5.5)
Decimal('5.5')
</code></pre>
<p>If this is the case, then why</p>
<pre><code>>>> round(4.5)
4
>>>... | 0 | 2016-10-04T14:43:43Z | 39,855,303 | <p>Python 3 uses Bankers Rounding, which rounds <code>.5</code> values to the closest even number.</p>
| 3 | 2016-10-04T14:46:08Z | [
"python",
"floating-point",
"floating-accuracy"
] |
Why round(4.5) == 4 and round(5.5) == 6 in Python 3.5? | 39,855,258 | <p>Looks like both 4.5 and 5.5 have exact float representations in Python 3.5:</p>
<pre><code>>>> from decimal import Decimal
>>> Decimal(4.5)
Decimal('4.5')
>>> Decimal(5.5)
Decimal('5.5')
</code></pre>
<p>If this is the case, then why</p>
<pre><code>>>> round(4.5)
4
>>>... | 0 | 2016-10-04T14:43:43Z | 39,855,329 | <p>In Python 3, exact half way numbers are rounded to the nearest even result. This <a href="https://docs.python.org/3/whatsnew/3.0.html#builtins">behavior changed in Python 3</a></p>
<blockquote>
<p>The <a href="https://docs.python.org/3/library/functions.html#round"><code>round()</code></a> function rounding strat... | 5 | 2016-10-04T14:46:49Z | [
"python",
"floating-point",
"floating-accuracy"
] |
what's the difference between GTK 3.14 and 3.18 on the css load | 39,855,273 | <p>I finish a GTK interface with GTK3.18,and it works well,but when i change to GTK3.14 version,the interface turn out to be very bad,the size and the colore of the widgets is changed,and i find there is no enough information about the GTK3.14 version.</p>
| 0 | 2016-10-04T14:44:21Z | 39,872,085 | <p>The CSS 'api' was basically undocumented and unstable before 3.20 so there isn't really any reasonable way to support all versions before it unless you make a separate theme for each version.</p>
| 1 | 2016-10-05T10:55:35Z | [
"python",
"css",
"gtk"
] |
access item in JSON result | 39,855,294 | <p>I am a bit confused as to how access <code>artists</code> <strong>name</strong> in this <code>json</code> result:</p>
<pre><code>{
"tracks" : {
"href" : "https://api.spotify.com/v1/search?query=karma+police&offset=0&limit=20&type=track&market=BR",
"items" : [ {
"album" : {
"a... | 0 | 2016-10-04T14:45:35Z | 39,855,365 | <p>You should do <code>items = results['tracks']['items'][0]['artists'][0]['name']</code>(although this is technically hardcoded)</p>
<p>As your artist and items object are arrays (with only one, so we reference the first with [0])</p>
| 0 | 2016-10-04T14:48:15Z | [
"python",
"json"
] |
access item in JSON result | 39,855,294 | <p>I am a bit confused as to how access <code>artists</code> <strong>name</strong> in this <code>json</code> result:</p>
<pre><code>{
"tracks" : {
"href" : "https://api.spotify.com/v1/search?query=karma+police&offset=0&limit=20&type=track&market=BR",
"items" : [ {
"album" : {
"a... | 0 | 2016-10-04T14:45:35Z | 39,855,372 | <p><code>artists</code> is a <em>list</em> of dicts, because a track can have many artists. Similarly <code>items</code> is also a list. So for example you can do <code>results['tracks']['items'][0]['artists'][0]['name']</code>, but that will only get you the first artist of the first track.</p>
| 1 | 2016-10-04T14:48:39Z | [
"python",
"json"
] |
access item in JSON result | 39,855,294 | <p>I am a bit confused as to how access <code>artists</code> <strong>name</strong> in this <code>json</code> result:</p>
<pre><code>{
"tracks" : {
"href" : "https://api.spotify.com/v1/search?query=karma+police&offset=0&limit=20&type=track&market=BR",
"items" : [ {
"album" : {
"a... | 0 | 2016-10-04T14:45:35Z | 39,855,742 | <p>Defensively written, this might look something like:</p>
<pre><code>artist_names = set() # using a set avoids adding the same name more than once
if 'tracks' in results and 'items' in results['tracks']:
for item in results['tracks']['items']:
for artist in item.get('artists', ()):
if 'name' in artist:
... | 0 | 2016-10-04T15:03:43Z | [
"python",
"json"
] |
How to ask a string again if the wrong answer is entered? | 39,855,326 | <p>I'm trying to get a string to keep repeating if the answer is wrong. How would I go about doing this? The code I have is below which works but doesn't repeat the answer.</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = i... | 1 | 2016-10-04T14:46:46Z | 39,855,435 | <p>There are a couple of things wrong with your code. Firstly, you are only asking for the answer once at the moment. You need to put <code>answer = input()</code> in a <code>while</code> loop. Secondly, you need to use <code>==</code> instead of <code>is</code>:</p>
<pre><code>print("Hello there, what is your name?")... | 2 | 2016-10-04T14:50:49Z | [
"python"
] |
How to ask a string again if the wrong answer is entered? | 39,855,326 | <p>I'm trying to get a string to keep repeating if the answer is wrong. How would I go about doing this? The code I have is below which works but doesn't repeat the answer.</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = i... | 1 | 2016-10-04T14:46:46Z | 39,855,464 | <p>You only need the wrong-answer check as loop condition and then output the "great job" message when the loop is over (no <code>if</code> is needed):</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = input()
while answer !=... | 1 | 2016-10-04T14:51:42Z | [
"python"
] |
How to ask a string again if the wrong answer is entered? | 39,855,326 | <p>I'm trying to get a string to keep repeating if the answer is wrong. How would I go about doing this? The code I have is below which works but doesn't repeat the answer.</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = i... | 1 | 2016-10-04T14:46:46Z | 39,855,483 | <pre><code>print('Guess 2 + 2: ')
answer = int(input())
while answer != 4:
print('try again')
answer = int(input())
print('congrats!')
</code></pre>
<p>I think this is the simplest solution. </p>
| 1 | 2016-10-04T14:52:41Z | [
"python"
] |
How to ask a string again if the wrong answer is entered? | 39,855,326 | <p>I'm trying to get a string to keep repeating if the answer is wrong. How would I go about doing this? The code I have is below which works but doesn't repeat the answer.</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = i... | 1 | 2016-10-04T14:46:46Z | 39,855,767 | <p>Here is my two cents for python2 : </p>
<pre><code>#!/usr/bin/env python
MyName = raw_input("Hello there, what is your name ? ")
print("Nice to meet you " + MyName)
answer = raw_input('What is 2 + 2 ? ')
while answer != '4':
print("Nope ! Please try again")
answer = raw_input('What is 2 + 2 ? ')
print(... | 0 | 2016-10-04T15:04:52Z | [
"python"
] |
How to ask a string again if the wrong answer is entered? | 39,855,326 | <p>I'm trying to get a string to keep repeating if the answer is wrong. How would I go about doing this? The code I have is below which works but doesn't repeat the answer.</p>
<pre><code>print("Hello there, what is your name?")
MyName = input()
print ("Nice to meet you " + MyName)
print ("What is 2 + 2?")
answer = i... | 1 | 2016-10-04T14:46:46Z | 39,855,831 | <p>By now you've got more answers than you can handle, but here are another couple of subtleties, with notes:</p>
<pre><code>while True: # loop indefinitely until we hit a break...
answer = input('What is 2 + 2 ? ') # ...which allows this line of code to be written just once (the DRY principle of programming... | 1 | 2016-10-04T15:07:27Z | [
"python"
] |
Python passing variable dates to function | 39,855,342 | <p>Hello: making progress but still struggling. I have the following json:</p>
<pre><code>json =
{
"emeter": {
"get_daystat": {
"day_list": [
{ "year": 2016, "month": 10, "day": 1, "energy": 0.651000 },
{ "year": 2016, "month": 10, "day": 2, "energy": 0.349000 },
{ "year": 2016, "mo... | 1 | 2016-10-04T14:47:16Z | 39,855,529 | <p>There is a simple issue with your script: <a href="https://docs.python.org/2/library/datetime.html" rel="nofollow"><code>strftime</code></a>, according to the docs, will</p>
<blockquote>
<p>return a string representing the date, controlled by an explicit format string.</p>
</blockquote>
<p>The keyword here being... | 2 | 2016-10-04T14:54:40Z | [
"python",
"function"
] |
Is python tuple assignment order fixed? | 39,855,410 | <p>Will</p>
<pre><code>a, a = 2, 1
</code></pre>
<p>always result in a equal to 1? In other words, is tuple assignment guaranteed to be left-to-right?</p>
<p>The matter becomes relevant when we don't have just a, but a[i], a[j] and i and j may or may not be equal.</p>
| 2 | 2016-10-04T14:49:58Z | 39,855,581 | <p>How it works :</p>
<pre><code>a, a = 2, 1
--> a does not exist, create variable a and set value to 2
--> a already exists, value of a changed to 1
</code></pre>
<p>When you have different variables, it works exactly the same way :</p>
<pre><code>a, b, a = 1, 2, 3
--> a does not exist, create variable a a... | 0 | 2016-10-04T14:56:45Z | [
"python",
"tuples",
"variable-assignment"
] |
Is python tuple assignment order fixed? | 39,855,410 | <p>Will</p>
<pre><code>a, a = 2, 1
</code></pre>
<p>always result in a equal to 1? In other words, is tuple assignment guaranteed to be left-to-right?</p>
<p>The matter becomes relevant when we don't have just a, but a[i], a[j] and i and j may or may not be equal.</p>
| 2 | 2016-10-04T14:49:58Z | 39,855,637 | <p>Yes, it is part of the python language reference that tuple assignment must take place left to right. </p>
<p><a href="https://docs.python.org/2.3/ref/assignment.html">https://docs.python.org/2.3/ref/assignment.html</a></p>
<blockquote>
<p>An assignment statement evaluates the expression list (remember that
th... | 7 | 2016-10-04T14:58:56Z | [
"python",
"tuples",
"variable-assignment"
] |
Django in sub-directory | 39,855,488 | <p>When i build my django application, i'll use the runserver command in order to test my website, but in deploy, let's say that i'll publish my website under: www.test.com/django.</p>
<p>My IIS it's configure with an application under my default website called "django".</p>
<p>I'm expecting that everything will work... | 1 | 2016-10-04T14:52:58Z | 39,856,091 | <p>The preferred method to fix this is to have your webserver pass the <code>SCRIPT_NAME</code> wsgi variable. Django will automatically use this variable as a prefix when constructing urls, without the need to change your url configuration. I'm unfamiliar with IIS, so I can't tell you how to do this. It does have the ... | 0 | 2016-10-04T15:19:15Z | [
"python",
"django",
"url"
] |
Using Select queries in python mysql as parameters for if/else block | 39,855,508 | <p>Can I use the results of a python SQL select query as parameters for an if/else statement in a function? If I have a DB with one column, and want to append the values of that column to a list for each row in the Select Query...I can't reference those queries in a function. For example:</p>
<pre><code>db = MySQLdb... | 0 | 2016-10-04T14:53:41Z | 39,855,651 | <p>Please see this link: <a href="http://stackoverflow.com/questions/14835852/convert-sql-result-to-list-python">Convert sql result to list python</a></p>
<p>Basically, you want something similar to this:</p>
<p><code>list(cur.fetchall())</code></p>
| 0 | 2016-10-04T14:59:33Z | [
"python",
"mysql",
"database",
"list",
"function"
] |
List comprehension confusion | 39,855,525 | <p>I'm slightly confused by a problem that I'm having and wondered if anyone could help (it seems trivial in my mind so I hope that it genuinely is!)</p>
<p>Basically, I have filtered by a list via the following list comprehension:</p>
<pre><code>depfilt = [s for s in department if 'author' not in s]
</code></pre>
<... | 2 | 2016-10-04T14:54:25Z | 39,855,576 | <p>Use <code>enumerate</code> instead of <code>index</code> in case of duplicate values</p>
<pre><code>[s for i, s in enumerate(subj) if 'author' not in department[i]]
</code></pre>
| 6 | 2016-10-04T14:56:37Z | [
"python"
] |
List comprehension confusion | 39,855,525 | <p>I'm slightly confused by a problem that I'm having and wondered if anyone could help (it seems trivial in my mind so I hope that it genuinely is!)</p>
<p>Basically, I have filtered by a list via the following list comprehension:</p>
<pre><code>depfilt = [s for s in department if 'author' not in s]
</code></pre>
<... | 2 | 2016-10-04T14:54:25Z | 39,855,609 | <p>If <code>department</code> and <code>subj</code> are definitely in the same order ie. corresponding elements of each match up, then use <a href="https://docs.python.org/2/library/functions.html#zip" rel="nofollow"><code>zip</code></a> to iterate over both lists simultaneously:</p>
<pre><code>[(d, s) for d, s in zip... | 0 | 2016-10-04T14:57:52Z | [
"python"
] |
manipulation of a list of strings containing digits to output a list of of digits | 39,855,632 | <p>I looking for help in manipulating a list of strings where I want to extract the digits such has :</p>
<pre><code> x = ['aa bb qq 2 months 60%', 'aa bb qq 3 months 70%', 'aa bb qq 1 month 80%']
</code></pre>
<p>I am trying to get to :</p>
<pre><code>[[2.0,60.0],[3.0,70.0],[1.0,80.0]]
</code></pre>
<p>in a ele... | 1 | 2016-10-04T14:58:44Z | 39,855,722 | <p>Use a <a href="https://docs.python.org/2/library/re.html" rel="nofollow">regular expression</a> to match integers and floats.</p>
<pre><code>import re
[[float(n) for n in re.findall(r'\d+\.?\d*', s)] for s in x]
</code></pre>
<p>Explanation for the regex (<code>r'\d+\.?\d*'</code>): </p>
<pre><code>r # a raw... | 7 | 2016-10-04T15:02:53Z | [
"python",
"string",
"list",
"python-2.7"
] |
Django server killed frequently | 39,855,652 | <p>I'm developing a Django project and testing it on a dedicated server.
The project is running on:</p>
<ul>
<li>django 1.9.6</li>
<li>virtualenv</li>
<li>python 2.7</li>
<li>cx_Oracle 5.2.1</li>
</ul>
<hr>
<p><strong>Running</strong> </p>
<pre><code>python manage.py runserver 192.168.30.17:8080 &
</code></pre... | 0 | 2016-10-04T14:59:34Z | 39,855,716 | <p>From the documentation on the django development server
<a href="https://docs.djangoproject.com/en/1.10/ref/django-admin/" rel="nofollow">https://docs.djangoproject.com/en/1.10/ref/django-admin/</a></p>
<blockquote>
<p>DO NOT USE THIS SERVER IN A PRODUCTION SETTING. It has not gone
through security audits or p... | 1 | 2016-10-04T15:02:47Z | [
"python",
"linux",
"django",
"virtualenv"
] |
Pandas : Apply function on multiple columns | 39,855,692 | <p>I'm trying to add a new column calculated from first quartile of all columns.
something like this:</p>
<pre><code>df['Q25']=df[col].apply(lambda x: np.percentile(x, 25) ,axis =1)
#col = ['1', '2','3',..'29'] days in one month
</code></pre>
<p>and this is the error I receive:</p>
<pre><code>KeyError: "['1' '2' '3'... | 0 | 2016-10-04T15:01:14Z | 39,855,877 | <p>Try this out :</p>
<pre><code>df['Q25']= [np.percentile(df.loc[i,:], 25) for i in df.index]
</code></pre>
| 1 | 2016-10-04T15:09:35Z | [
"python",
"pandas"
] |
Python sum array of objects into objects | 39,855,697 | <p>I have a list (name=carpet) of objects type mini_carpet.
Mini_carpet contains a list of objects called packages.
Packages has various properties, the one interesting to me is nr_buys.</p>
<p>What I want to do is to sum the various nr_buys that are within a mini_carpet, within a carpet.
This is what I have done so f... | 2 | 2016-10-04T15:01:38Z | 39,855,733 | <p>When you've already coded the __len__ method, u dont need to call it by <code>carpet.__len__()</code>. Instead of use <code>len(carpet)</code>.</p>
| -1 | 2016-10-04T15:03:22Z | [
"python"
] |
Python sum array of objects into objects | 39,855,697 | <p>I have a list (name=carpet) of objects type mini_carpet.
Mini_carpet contains a list of objects called packages.
Packages has various properties, the one interesting to me is nr_buys.</p>
<p>What I want to do is to sum the various nr_buys that are within a mini_carpet, within a carpet.
This is what I have done so f... | 2 | 2016-10-04T15:01:38Z | 39,855,760 | <pre><code>for d in range(0, len(carpet) - 1, +1):
nr_total = sum(carpet[d].packages[i].nr_buys for i, _ in enumerate(carpet[d].packages))
</code></pre>
<p>You want to get the <code>indexes</code> of a <code>dict</code>, so use <code>enumerate</code>, which returns a <code>tuple</code>: <code>(index, item)</code>.
Als... | 0 | 2016-10-04T15:04:37Z | [
"python"
] |
Python sum array of objects into objects | 39,855,697 | <p>I have a list (name=carpet) of objects type mini_carpet.
Mini_carpet contains a list of objects called packages.
Packages has various properties, the one interesting to me is nr_buys.</p>
<p>What I want to do is to sum the various nr_buys that are within a mini_carpet, within a carpet.
This is what I have done so f... | 2 | 2016-10-04T15:01:38Z | 39,855,917 | <p>Another method of doing this, which I feel is more Pythonic, is:</p>
<pre><code>nr_total = sum(package.nr_buys for package in carpet[d].packages)
</code></pre>
<p>The difference, as stated above, is that calling <code>for x in list</code> in python gives you the items of the list, and not their indices. That means... | 0 | 2016-10-04T15:11:46Z | [
"python"
] |
Python sum array of objects into objects | 39,855,697 | <p>I have a list (name=carpet) of objects type mini_carpet.
Mini_carpet contains a list of objects called packages.
Packages has various properties, the one interesting to me is nr_buys.</p>
<p>What I want to do is to sum the various nr_buys that are within a mini_carpet, within a carpet.
This is what I have done so f... | 2 | 2016-10-04T15:01:38Z | 39,855,991 | <blockquote>
<p>sum the <em>various</em> <code>nr_buys</code> that are within a mini_carpet, within a carpet</p>
</blockquote>
<p>Asides what others have said about trying to index your list with a non integer object, you're also throwing away the result of previous iterations. </p>
<p>You can use a mapping/diction... | 0 | 2016-10-04T15:15:15Z | [
"python"
] |
Python sum array of objects into objects | 39,855,697 | <p>I have a list (name=carpet) of objects type mini_carpet.
Mini_carpet contains a list of objects called packages.
Packages has various properties, the one interesting to me is nr_buys.</p>
<p>What I want to do is to sum the various nr_buys that are within a mini_carpet, within a carpet.
This is what I have done so f... | 2 | 2016-10-04T15:01:38Z | 39,856,029 | <p>In Python, it's generally better to loop directly over the items in a list, rather than looping indirectly using indices. It's easier to read, and more efficient not to muck around with indices that you don't really need.</p>
<p>To get a total for each <code>mini_carpet</code> you can do this:</p>
<pre><code>for m... | 2 | 2016-10-04T15:17:20Z | [
"python"
] |
Python - Change variable outside function without return | 39,855,732 | <p>I just started learning Python and I ran into this problem. I want to set a variable from inside a method, but the variable is outside the method. </p>
<p>The method gets activated by a button. Then I want to get the value from that variable that I set when I press another button. The problem is that the value that... | 3 | 2016-10-04T15:03:18Z | 39,855,755 | <p>Use <code>global</code> to modify a variable outside of the function:</p>
<pre><code>def UpdateText():
global currentMovie
currentMovie = random.randint(0, 100)
print(currentMovie)
</code></pre>
<p>However, don't use <code>global</code>. It's generally a <a href="https://en.wikipedia.org/wiki/Code_smel... | 3 | 2016-10-04T15:04:22Z | [
"python"
] |
Python - Change variable outside function without return | 39,855,732 | <p>I just started learning Python and I ran into this problem. I want to set a variable from inside a method, but the variable is outside the method. </p>
<p>The method gets activated by a button. Then I want to get the value from that variable that I set when I press another button. The problem is that the value that... | 3 | 2016-10-04T15:03:18Z | 39,894,555 | <p>Here's a simple (python 2.x) example of how to 1 <em>not</em> use globals and 2 use a (simplistic) domain model class. </p>
<p>The point is: you should first design your domain model independently from your user interface, then write the user interface code calling on your domain model. In this case your UI is a Tk... | 3 | 2016-10-06T11:16:49Z | [
"python"
] |
How to clone a git repo using python? | 39,855,775 | <p>I am looking for equivalent way to clone a repo in python</p>
<pre><code>clone_start=`date +%s%N` && git clone --quiet ssh://$USER@$host:29418/git_performance_check >& /dev/null && c
lone_end=`date +%s%N`
Time_clone=`echo "scale=2;($clone_end - $clone_start) / 1000000000" | bc`
</code... | 0 | 2016-10-04T15:05:11Z | 39,855,859 | <p>You can use <a href="https://pypi.python.org/pypi/GitPython/" rel="nofollow">GitPyhton</a> lib</p>
<p>Clone from existing repositories or initialize new empty ones:</p>
<pre><code>import git
host = 'github'
user = 'root'
git.Git().clone("ssh://{0}@{1}:29418/git_performance_check".format(user, host))
</code></pre>
| 2 | 2016-10-04T15:08:45Z | [
"python",
"git"
] |
How to clone a git repo using python? | 39,855,775 | <p>I am looking for equivalent way to clone a repo in python</p>
<pre><code>clone_start=`date +%s%N` && git clone --quiet ssh://$USER@$host:29418/git_performance_check >& /dev/null && c
lone_end=`date +%s%N`
Time_clone=`echo "scale=2;($clone_end - $clone_start) / 1000000000" | bc`
</code... | 0 | 2016-10-04T15:05:11Z | 39,855,898 | <p>You could use <a href="https://pypi.python.org/pypi/GitPython/" rel="nofollow"><code>GitPython</code></a>. Something like this:</p>
<pre><code> from git import Repo
repo = Repo.init('/tmp/git_performance_check')
repo.create_remote('origin', url='ssh://user@host:29418/git_performance_check')
repo.rem... | 0 | 2016-10-04T15:10:50Z | [
"python",
"git"
] |
Regex: can't understand the endpos | 39,855,791 | <p>Could you help me understand why <code>print(truth(prog.match(text, 0, 6)))</code> equals true?</p>
<pre><code>import re
from operator import truth
prog = re.compile(r'<HTML>$')
text = "<HTML> "
print("Last symbol: {}".format(len('<HTML>')-1))
print(truth(prog.match(text, 0, 6)))
print... | 0 | 2016-10-04T15:05:55Z | 39,855,924 | <p>If you use the <code>match(text, startpos, endpos)</code> method of a compiled regex, it will act as if you've passed <code>match(text[startpos:endpos])</code> (well, <a href="https://docs.python.org/3/library/re.html#re.regex.search" rel="nofollow">not exactly</a>, but for the purposes of <code>$</code>, it is). Th... | 1 | 2016-10-04T15:12:09Z | [
"python",
"python-3.x"
] |
Replacing Empty Cells with 0 in Python 3 | 39,855,838 | <p>I am using the csv module to read in csv files to do data analysis. </p>
<pre><code>data = []
c1 = []
c2 = []
c3 = []
data_file = csv.reader(open('file.csv'))
for row in data_file:
data.append(row)
for i in data:
c1.append(data[i][0])
c2.append(data[i][1])
c3.append(data[i][2])
</code></... | 0 | 2016-10-04T15:07:46Z | 39,855,909 | <p>before appending your data you could do a check similar to what is found here : </p>
<p><a href="http://stackoverflow.com/questions/34192705/python-how-to-check-if-cell-in-csv-file-is-empty">Python: How to check if cell in CSV file is empty?</a></p>
<p>When the condition is true, simply append 0 to your correspond... | 0 | 2016-10-04T15:11:15Z | [
"python",
"csv"
] |
Readable Time Format (w/ Good Grammar!) | 39,855,889 | <p>I've been reading posts upon posts of the methods for converting an input number of seconds, which should be output as a formal string with given durations (hours, minutes, seconds). But I want to know how to format it so that it accounts for singularization/pluralization, when I know, for example, <code>62</code> s... | 1 | 2016-10-04T15:10:11Z | 39,856,175 | <p>Your code already works quite nicely, you just have one problem with your <code>return "now"</code> that I fixed in the code below. What else do you want your code to do?</p>
<pre><code>def prettyList(human_time):
if len(human_time) > 1:
return ' '.join([', '.join(human_time[:-1]), "and", human_time[... | 2 | 2016-10-04T15:23:31Z | [
"python",
"time",
"control-flow"
] |
Readable Time Format (w/ Good Grammar!) | 39,855,889 | <p>I've been reading posts upon posts of the methods for converting an input number of seconds, which should be output as a formal string with given durations (hours, minutes, seconds). But I want to know how to format it so that it accounts for singularization/pluralization, when I know, for example, <code>62</code> s... | 1 | 2016-10-04T15:10:11Z | 39,857,046 | <p>Made some tweaks for readability :</p>
<pre><code>def pretty_list(human_time):
return human_time[0] if len(human_time) == 1 else ' '.join([', '.join(human_time[:-1]), "and", human_time[-1]])
def get_intervals(seconds):
m, s = divmod(seconds, 60)
h, m = divmod(m, 60)
return (
("hour", h),
... | 2 | 2016-10-04T16:07:26Z | [
"python",
"time",
"control-flow"
] |
Readable Time Format (w/ Good Grammar!) | 39,855,889 | <p>I've been reading posts upon posts of the methods for converting an input number of seconds, which should be output as a formal string with given durations (hours, minutes, seconds). But I want to know how to format it so that it accounts for singularization/pluralization, when I know, for example, <code>62</code> s... | 1 | 2016-10-04T15:10:11Z | 39,857,391 | <p>I found it! I actually needed more intervals - the durations asked for were lengthier than I thought...</p>
<pre><code>def prettyList(human_time):
if len(human_time) > 1:
return ' '.join([', '.join(human_time[:-1]), "and", human_time[-1]])
elif len(human_time) == 1:
return human_time[0]
... | 0 | 2016-10-04T16:25:51Z | [
"python",
"time",
"control-flow"
] |
Readable Time Format (w/ Good Grammar!) | 39,855,889 | <p>I've been reading posts upon posts of the methods for converting an input number of seconds, which should be output as a formal string with given durations (hours, minutes, seconds). But I want to know how to format it so that it accounts for singularization/pluralization, when I know, for example, <code>62</code> s... | 1 | 2016-10-04T15:10:11Z | 39,858,068 | <p>You can try to code for each variation:</p>
<pre><code>def timestamp(ctime):
sec = int(ctime)
if sec == 0:
return "Now"
m, s = divmod(sec, 60)
h, m = divmod(m, 60)
if h == 1: hr_t = 'Hour'
else: hr_t = 'Hours'
if m == 1: mn_t = 'Minute'
else: mn_t = 'Minutes'
if s == 1: s... | 1 | 2016-10-04T17:09:14Z | [
"python",
"time",
"control-flow"
] |
Readable Time Format (w/ Good Grammar!) | 39,855,889 | <p>I've been reading posts upon posts of the methods for converting an input number of seconds, which should be output as a formal string with given durations (hours, minutes, seconds). But I want to know how to format it so that it accounts for singularization/pluralization, when I know, for example, <code>62</code> s... | 1 | 2016-10-04T15:10:11Z | 39,870,249 | <p>I think that I have covered all of the bases here but I'm sure someone will let me know if I have made an error (large or small) :)</p>
<pre><code>from dateutil.relativedelta import relativedelta
def convertdate(secs):
raw_date = relativedelta(seconds=secs)
years, days = divmod(raw_date.days, 365) # To crud... | 0 | 2016-10-05T09:28:51Z | [
"python",
"time",
"control-flow"
] |
How to force execution of next function | 39,855,968 | <p>I am attempting execute multiple functions defined by the twitterbot library. I need the code to execute one function, then the next, and then the next, or in a random order. The function, however, is designed to run in a loop.</p>
<p>I rather stay away from editing the actual library, so I am looking for a solutio... | 0 | 2016-10-04T15:14:29Z | 39,856,045 | <p>You can use the reference to the functions in a list then use <code>random.shuffle</code>. And you can use <code>threading.Thread</code> to run all of your functions. I am using <code>time.sleep</code> and <code>for</code> just as an example to illustrate how each thread is being executed even though the <code>for</... | 1 | 2016-10-04T15:17:56Z | [
"python",
"twitter"
] |
django 1.10 get individual objects out of query | 39,856,025 | <p>I have a model set up for subscribers to get on our mailing list. Whenever a new blog post is created I want to email the user. How do I get individual email addresses and first names from the model to use to email, each person individually? I want their first name to be in the email.</p>
<p>Here is my models.py:</... | 0 | 2016-10-04T15:17:10Z | 39,856,236 | <p>You're doing some bizarre unnecessary things in your loop. <code>user</code> is already the relevant instance of EmailSubscriber; it <em>already</em> has <code>first_name</code> and <code>email</code> attributes. You don't need to set them, you just use them.</p>
| 1 | 2016-10-04T15:26:06Z | [
"python",
"django",
"django-email"
] |
Different behaviour when operating on equivalent multidimensional lists | 39,856,037 | <p>When I operate on two, I think equivalent multidimensional lists, I have different outcomes. The only difference between the lists is how they are created. I'm using Python 3.4.3</p>
<pre><code>>>> b = [[1,2],[1,2]]
>>> b[0][0] += 1
>>> b
[[2, 2], [1, 2]]
>>> b = [[1,2]] * 2
>... | 1 | 2016-10-04T15:17:45Z | 39,856,103 | <pre><code>b = [[1,2],[1,2]]
print(id(b[0])) # 139948012160968
print(id(b[1])) # 139948011731400
b = [[1,2]]*2
print(id(b[0])) # 139948012161032
print(id(b[1])) # 139948012161032
</code></pre>
<p><a href="https://docs.python.org/3/library/functions.html#id" rel="nofollow">`id() shows the object's ID or the memory l... | 1 | 2016-10-04T15:19:48Z | [
"python",
"list"
] |
Different behaviour when operating on equivalent multidimensional lists | 39,856,037 | <p>When I operate on two, I think equivalent multidimensional lists, I have different outcomes. The only difference between the lists is how they are created. I'm using Python 3.4.3</p>
<pre><code>>>> b = [[1,2],[1,2]]
>>> b[0][0] += 1
>>> b
[[2, 2], [1, 2]]
>>> b = [[1,2]] * 2
>... | 1 | 2016-10-04T15:17:45Z | 39,856,142 | <p>This is very-well understood behavior in Python.</p>
<pre><code>a = [[], []] # two separate references to two separate lists
b = [] * 2 # two references to the same list object
a[0].append(1) # does not affect a[1]
b[0].append(1) # affects b[0] and b[1]
</code></pre>
<p><a class='doc-link' href="http://stackoverfl... | 0 | 2016-10-04T15:21:34Z | [
"python",
"list"
] |
Different behaviour when operating on equivalent multidimensional lists | 39,856,037 | <p>When I operate on two, I think equivalent multidimensional lists, I have different outcomes. The only difference between the lists is how they are created. I'm using Python 3.4.3</p>
<pre><code>>>> b = [[1,2],[1,2]]
>>> b[0][0] += 1
>>> b
[[2, 2], [1, 2]]
>>> b = [[1,2]] * 2
>... | 1 | 2016-10-04T15:17:45Z | 39,856,158 | <p>In the second case you're making what's known as a shallow copy of the <code>[1,2]</code> list. Essentially what that means is that somewhere in memory you have the list <code>[1,2]</code>, and when you write <code>[[1,2]]*2</code> you're saying you want two references to that same list. Thus, when you change one of... | 0 | 2016-10-04T15:22:29Z | [
"python",
"list"
] |
Python script to parse a big workbook | 39,856,092 | <p>I have an extra sized excel file and I need to automate a task I do everyday: Add rows to the bottom with the day's date, save a new workbook, crop the old ones and save as a new file with the day's date.</p>
<p>An example is today only having rows with date 04-10-2016 and the filename would be <code>[sheetname]041... | 0 | 2016-10-04T15:19:17Z | 39,856,346 | <p>Based on comments below I am updating my answer. Just do:</p>
<pre><code>xls.sheet_names()[0]
</code></pre>
<p>However, if you want to loop through the sheets, then you may want all sheet names instead of just the first one.</p>
| 0 | 2016-10-04T15:32:12Z | [
"python",
"excel",
"filtering"
] |
Does scons customized decider function require to be class member? | 39,856,184 | <p>I searched from internet on how to write our own decider function in scons, as to how/when a source file should be rebuilt, like this:</p>
<pre><code>Program('hello.c')
def decide_if_changed(dependency,target,prev_ni):
if self.get_timestamp()!=prev_ni.timestamp:
dep=str(dependency)
tgt=str(target)
if specifi... | 0 | 2016-10-04T15:23:47Z | 39,873,940 | <p>The name <code>self</code> is not defined because there is a typo in the documentation. The second line of the decider should read:</p>
<pre><code>if dependency.get_timestamp()!=prev_ni.timestamp:
</code></pre>
<p>Implementing the <code>specific_part_of_file_has_changed()</code> method (or any similar series of st... | 1 | 2016-10-05T12:26:42Z | [
"python",
"class",
"member",
"scons",
"self"
] |
Django - Variable not being set properly | 39,856,324 | <p>So I am trying to run my users input through if elif statements in some arrays I setup. The goal is to have the variable set to a value if the input is found in the array. Right now the values are staying <code>None</code>. I am sure this is something silly that I am missing on my part, but any help would be greatly... | 0 | 2016-10-04T15:30:49Z | 39,856,579 | <p>You have a few problems here.</p>
<p>Firstly, you are using the values directly from <code>request.POST</code>. Those will always be strings. To get the values in the type specified in your form, you should use the <code>form.cleaned_data</code> dict.</p>
<p>Secondly, your fields are decimals, but your arrays cont... | 1 | 2016-10-04T15:44:15Z | [
"python",
"django"
] |
Django - Variable not being set properly | 39,856,324 | <p>So I am trying to run my users input through if elif statements in some arrays I setup. The goal is to have the variable set to a value if the input is found in the array. Right now the values are staying <code>None</code>. I am sure this is something silly that I am missing on my part, but any help would be greatly... | 0 | 2016-10-04T15:30:49Z | 39,856,607 | <p>You are setting <code>chest</code> from <code>request.POST</code> which will give you a string value. Convert it to a <code>float</code> and it should work.</p>
| 0 | 2016-10-04T15:45:48Z | [
"python",
"django"
] |
Medium Pandas Panel to hdf5 | 39,856,341 | <p>I'm struggling with stupid problem; until now I was working with pandas panel that fits in to the memory. Now I've to scale up the process and I run out of the memory.
The solution proposed on the panda's documentation is to save everything on a hdf5 file. Well it works if your panel is smaller than the memory... ot... | 0 | 2016-10-04T15:32:03Z | 39,856,889 | <p>I <em>think</em> this should work</p>
<p>To write to the file:</p>
<pre><code>store = pd.HDFStore(âtest.h5â, âwâ, append = True)
for partofpanel in panelparts:
store.append('SP', partofpanel, data_columns = True, index = True)
</code></pre>
<p>To read from file:</p>
<pre><code>x = pd.HDFStore(âtest.h... | 0 | 2016-10-04T15:58:42Z | [
"python",
"pandas",
"panel",
"hdf5"
] |
unindent does not match any outer indentation level Coursera assignment | 39,856,409 | <p>Hi guys i just started with Python (3.5) trying to complete an assignment on Coursera and i keep getting the above error </p>
<pre><code>Age = 15
if Age >=15 :
print ("Highschool")
else if
print ("No HighSchool")
</code></pre>
| 0 | 2016-10-04T15:34:47Z | 39,856,556 | <p>Python, unlike many programming languages, relies on indentation to dictate scope. In particular, it permits tabs or certain number of spaces to indicate scope. Contiguous lines with the same indentation level are all in the same scope.</p>
<p>Your code:</p>
<pre><code>Age = 15
if Age >=15 :
print ("Highsch... | 1 | 2016-10-04T15:43:15Z | [
"python",
"python-3.x"
] |
unindent does not match any outer indentation level Coursera assignment | 39,856,409 | <p>Hi guys i just started with Python (3.5) trying to complete an assignment on Coursera and i keep getting the above error </p>
<pre><code>Age = 15
if Age >=15 :
print ("Highschool")
else if
print ("No HighSchool")
</code></pre>
| 0 | 2016-10-04T15:34:47Z | 39,856,568 | <p>The problem is that the <code>else</code> matching an <code>if</code> MUST occur at exactly the same indentation level as the <code>if</code>. Also, there's no need for another <code>if</code> following the <code>else</code>. Try</p>
<pre><code>Age = 15
if Age >=15:
print ("Highschool")
else:
print ("No ... | 0 | 2016-10-04T15:43:52Z | [
"python",
"python-3.x"
] |
Execute subprocess sequentially in python | 39,856,419 | <p>I am trying to the following 2 commands in python one after another.</p>
<pre><code>runmqsc <Queuem manager name>
Display QL (<queue name>)
</code></pre>
<p>I can execute the rumqsc command using subprocess. </p>
<pre><code>subprocess.call("runmqsc <queue manager name>", shell= True)
</code></pr... | 0 | 2016-10-04T15:35:03Z | 39,863,043 | <p>On Unix, Linux or Windows, you can simply do:</p>
<pre><code>runmqsc QMgrName < some_mq_cmds.mqsc > some_mq_cmds.out
</code></pre>
<p>In the 'some_mq_cmds.mqsc' file, put your MQSC commands like: </p>
<pre><code>DISPLAY QL("TEST.Q1")
</code></pre>
| 0 | 2016-10-04T23:01:44Z | [
"python",
"unix",
"subprocess",
"websphere-mq-fte"
] |
Execute subprocess sequentially in python | 39,856,419 | <p>I am trying to the following 2 commands in python one after another.</p>
<pre><code>runmqsc <Queuem manager name>
Display QL (<queue name>)
</code></pre>
<p>I can execute the rumqsc command using subprocess. </p>
<pre><code>subprocess.call("runmqsc <queue manager name>", shell= True)
</code></pr... | 0 | 2016-10-04T15:35:03Z | 39,866,007 | <p>You don't want to run to subprocess commands sequentially. When you run <code>runmqsc</code> on the command line, it takes over <code>stdin</code>, executes the commands you enter and then finally exits when you tell it to. From <a href="http://www.ibm.com/support/knowledgecenter/SSFKSJ_9.0.0/com.ibm.mq.ref.adm.doc/... | 0 | 2016-10-05T05:26:12Z | [
"python",
"unix",
"subprocess",
"websphere-mq-fte"
] |
SWIG general questions | 39,856,524 | <p>I'm learning SWIG and I'm trying to understand some c++ possible situations which i haven't been able to figure out after looking the docs&examples, here's my content:</p>
<p>usecase1.h</p>
<pre><code>#ifndef __USECASE1_H__
#define __USECASE1_H__
namespace foo_namespace {
int usecase1_f1( float b, float c... | 1 | 2016-10-04T15:41:23Z | 39,868,588 | <p>Make sure you're passing -c++ to swig when you run it, C++ support isn't enabled by default.
See here for more details on wrapping C++ - <a href="http://www.swig.org/Doc1.3/SWIGPlus.html" rel="nofollow">http://www.swig.org/Doc1.3/SWIGPlus.html</a></p>
| 0 | 2016-10-05T08:08:25Z | [
"python",
"c++",
"namespaces",
"inline",
"swig"
] |
how to compare two objects in class using __cmp__ method in Python? | 39,856,601 | <pre><code>class Box(object):
def __init__(self, ival):
self.value = ival
def __cmp__(self,other):
if self.value < other:
return
elif self.value > other:
return 1
else:return 0
</code></pre>
<p>But when I wanna test the program with :</p>
<pre><code>Box(2) < Box(2)
Box(2) <... | -1 | 2016-10-04T15:45:29Z | 39,856,645 | <p>You have to compare <code>self.value</code> to <code>other.value</code>:</p>
<pre><code>def __cmp__(self,other):
if self.value < other.value:
return -1
elif self.value > other.value:
return 1
else:return 0
</code></pre>
<p>otherwise you're comparing an integer to an object</p>
| 1 | 2016-10-04T15:47:14Z | [
"python",
"python-2.7"
] |
how to compare two objects in class using __cmp__ method in Python? | 39,856,601 | <pre><code>class Box(object):
def __init__(self, ival):
self.value = ival
def __cmp__(self,other):
if self.value < other:
return
elif self.value > other:
return 1
else:return 0
</code></pre>
<p>But when I wanna test the program with :</p>
<pre><code>Box(2) < Box(2)
Box(2) <... | -1 | 2016-10-04T15:45:29Z | 39,856,674 | <p><a href="https://docs.python.org/2/library/functions.html#cmp" rel="nofollow">Doc reference</a> on <code>__cmp__</code>:</p>
<blockquote>
<p>Should <em>return</em> a <strong>negative integer</strong> if <code>self < other</code>, <strong>zero</strong> if <code>self == other</code>, a <strong>positive integer</... | 0 | 2016-10-04T15:48:27Z | [
"python",
"python-2.7"
] |
how to compare two objects in class using __cmp__ method in Python? | 39,856,601 | <pre><code>class Box(object):
def __init__(self, ival):
self.value = ival
def __cmp__(self,other):
if self.value < other:
return
elif self.value > other:
return 1
else:return 0
</code></pre>
<p>But when I wanna test the program with :</p>
<pre><code>Box(2) < Box(2)
Box(2) <... | -1 | 2016-10-04T15:45:29Z | 39,856,711 | <p>Note that the <code>__cmp__</code> method id deprecated now - you should really use the so-called "rich comparison" methods - <code>__eq__</code> and friends.</p>
<p>The error is being caused because you are attempting to compare an integer with a <code>Box</code> object, and no such comparison is defined. Perhaps ... | 0 | 2016-10-04T15:50:23Z | [
"python",
"python-2.7"
] |
how to compare two objects in class using __cmp__ method in Python? | 39,856,601 | <pre><code>class Box(object):
def __init__(self, ival):
self.value = ival
def __cmp__(self,other):
if self.value < other:
return
elif self.value > other:
return 1
else:return 0
</code></pre>
<p>But when I wanna test the program with :</p>
<pre><code>Box(2) < Box(2)
Box(2) <... | -1 | 2016-10-04T15:45:29Z | 39,856,728 | <p>Python's __cmp__ magic method returns an integer > 0 if greater, 0 if equal, and < 0 if less. You can see that in the <a href="https://docs.python.org/2/reference/datamodel.html#object.__cmp__" rel="nofollow">docs</a>.</p>
<p>Your __cmp__ function returns None for the 'less than' comparison.</p>
<pre><code>clas... | 2 | 2016-10-04T15:50:58Z | [
"python",
"python-2.7"
] |
sending the value of HTML checkbox to django view | 39,856,699 | <p>I have the following HTML page</p>
<pre><code><input type="checkbox" name="checks[]" value="1">REG_AGREED_SUITE01
</label>
<hr>
<label class="checkbox">
<input type="checkbox" name="checks[]" value="2">REG_AGREED_SUITE02
</label>
<hr>
<label class="checkb... | 0 | 2016-10-04T15:49:49Z | 39,857,010 | <p>Use Jquery and ajax request to pass data to view:</p>
<pre><code> $("checkbox").change(function(){
$.post("path/to/url",
{
checkBoxValue: $("#CheckboxID").val()
}
});
</code></pre>
| 1 | 2016-10-04T16:05:04Z | [
"python",
"html",
"django",
"jenkins"
] |
Why Python's RotatingFileHandler of logging module will rename log file instead of create a new one? | 39,856,709 | <p>I have read the <code>handlers.py</code>of Python's logging module, and found that the logic of rotating log is unreasonable. The follow picture is its comments:
<a href="http://i.stack.imgur.com/0n3Ul.png" rel="nofollow"><img src="http://i.stack.imgur.com/0n3Ul.png" alt="enter image description here"></a></p>
<p>I... | -1 | 2016-10-04T15:50:10Z | 39,857,090 | <p>This is so that <code>console.log</code> will always be the latest log file, you don't need any extra logic to find the newest log file. This has been standard practice for ages.</p>
<p>I know that, at least on Linux/Unix, when a process opens a file, it's filename gets translated to a inode value, and that is use... | 1 | 2016-10-04T16:09:10Z | [
"python",
"logging"
] |
Why Python's RotatingFileHandler of logging module will rename log file instead of create a new one? | 39,856,709 | <p>I have read the <code>handlers.py</code>of Python's logging module, and found that the logic of rotating log is unreasonable. The follow picture is its comments:
<a href="http://i.stack.imgur.com/0n3Ul.png" rel="nofollow"><img src="http://i.stack.imgur.com/0n3Ul.png" alt="enter image description here"></a></p>
<p>I... | -1 | 2016-10-04T15:50:10Z | 39,857,169 | <p>The main problem with your proposal is that the actual logging file always will be changing (first will be console.log, later will be console.log.1, after that console.log.2 etc...) so, all the programs that will read the logs, they will have to implement logic to find what is the newer file, the main problem is tha... | 1 | 2016-10-04T16:13:14Z | [
"python",
"logging"
] |
Python (2.*) Tkinter - Advanced Event Handling Formatting | 39,856,795 | <p>I'm writing a test program to detect mouse motion within a Tkinter Window using Python 2.*. I can create the necessary widgets and bind the appropriate event handler function to the root widget as needed:</p>
<pre><code>import Tkinter as tk
class App:
def __init__(self, master=None):
self.root = master
... | 1 | 2016-10-04T15:53:54Z | 39,857,937 | <p>for the combined event handling, you can do something like:</p>
<pre><code>class App:
holding = False
def __init__(self, master):
self.root = master
self.root.bind("<KeyPress>", self.holdkey)
self.root.bind("<KeyRelease>", self.releasekey)
def holdkey(self, e):
if e.char == "r" an... | 1 | 2016-10-04T17:00:36Z | [
"python",
"tkinter",
"event-handling"
] |
How to define class variables using the functions and variables of an instance in Python | 39,856,861 | <p>Is there a way to define a class variable using the variables and functions of the instance? Thanks</p>
<p>The simplified code looks like this:</p>
<pre><code>def ClassA():
X = self.func(self.a)
def __init__(self, avalue):
self.a = avalue
def func(self):
return self.a + 5
</code></pre... | -3 | 2016-10-04T15:57:17Z | 39,856,921 | <p>Firstly, you define a Class using <code>class</code>, not <code>def</code>.</p>
<p><code>self</code> only needs to be used inside of the class' function definitions, because they change the scope. Outside of them you don't need it:
<code>x = func(a)</code>.</p>
<p>But your code wouldn't work anyways because the in... | 0 | 2016-10-04T16:00:25Z | [
"python",
"class",
"scope"
] |
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