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changing line properties in matplotlib pie chart,plt.rcParams['line.color'] = 'white' |
how to swap a group of column headings with their values in pandas,"df = df.assign(a5=['Foo', 'Bar', 'Baz'])" |
convert scientific notation to decimal - python,print('Number is: %.8f' % float(a[0] / a[1])) |
adding new key inside a new key and assigning value in python dictionary,dic['Test'].update({'class': {'section': 5}}) |
how to get every single permutation of a string?,"print([''.join(p) for i in range(1, len(s) + 1) for p in permutations(s, i)])" |
dropping a single (sub-) column from a multiindex,"df.drop('a', level=1, axis=1)" |
creating list of random numbers in python,print('{.5f}'.format(randomList[index])) |
python: how to build a dict from plain list of keys and values,"dict(zip(i, i))" |
"how to decode url to path in python, django",urllib.parse.unquote(url) |
can i extend within a list of lists in python?,"[[1, 100313, 0, 0, 1], [2, 100313, 0, 0, 1], [1, 100314, 0, 1, 0], [3, 100315]]" |
select all rows in dataframe `df` where the values of column 'columnx' is bigger than or equal to `x` and smaller than or equal to `y`,df[(x <= df['columnX']) & (df['columnX'] <= y)] |
how to exclude a character from a regex group?,re.compile('[^a-zA-Z0-9-]+') |
permanently set the current directory to the 'c:/users/name/desktop',os.chdir('C:/Users/Name/Desktop') |
display a grayscale image from array of pixels `imagearray`,"imshow(imageArray, cmap='Greys_r')" |
how does a descriptor with __set__ but without __get__ work?,myinst.__dict__['attr'] |
organizing list of tuples,"[(1, 4), (4, 8), (8, 10)]" |
how can i print over the current line in a command line application?,sys.stdout.flush() |
how can i make a scatter plot colored by density in matplotlib?,"plt.scatter(np.random.randn(100), np.random.randn(100), facecolors='none') " |
how do you convert yyyy-mm-ddthh:mm:ss.000z time format to mm/dd/yyyy time format in python?,print(d.strftime('%m/%d/%Y')) |
sending a mail from flask-mail (smtpsenderrefused 530),app.config['MAIL_SERVER'] = 'smtp.gmail.com' |
display a decimal in scientific notation,"""""""{:.2E}"""""".format(Decimal('40800000000.00000000000000'))" |
convert a list to a dictionary in python,"b = {a[i]: a[i + 1] for i in range(0, len(a), 2)}" |
how to sort a dataframe in python pandas by two or more columns?,"df.sort_values(['a', 'b'], ascending=[True, False])" |
how can i exit fullscreen mode in pygame?,"pygame.display.set_mode(size, FULLSCREEN)" |
python pickle/unpickle a list to/from a file 'afile',"pickle.load(open('afile', 'rb'))" |
replace the single quote (') character from a string,""""""""""""".join([c for c in string if c != ""'""])" |
how to convert hex string to integer in python?,"int('0x000000001', 16)" |
writing nicely formatted text in python,"f.write('%-40s %6s %10s %2s\n' % (filename, type, size, modified))" |
how to write a python script that can communicate with the input and output of a swift executable?,process.stdin.flush() |
get a list of last trailing words from another list of strings`original_list`,new_list = [x.split()[-1] for x in Original_List] |
python: convert unicode string to mm/dd/yyyy,"datetime.datetime.strptime('Mar232012', '%b%d%Y').strftime('%m/%d/%Y')" |
display a image file `pathtofile`,Image.open('pathToFile').show() |
how do i save data from a modelform to database in django?,obj.save() |
is it possible to add a string as a legend item in matplotlib,plt.show() |
extracting first n columns of a numpy matrix,"a[:, :2]" |
python - converting hex to int/char,[ord(c) for c in s.decode('hex')] |
how to call a function from another file?,print(function()) |
check if string contains a certain amount of words of another string,"print([(s, s in st1) for s in re.findall(pat, st2)])" |
"saving dictionary whose keys are tuples with json, python","json.dumps({str(k): v for k, v in data.items()})" |
row-wise indexing in numpy,"i = np.array([[0], [1]])" |
pytz - converting utc and timezone to local time,"pytz.utc.localize(utc_time, is_dst=None).astimezone(tz)" |
"how to use regular expression to separate numbers and characters in strings like ""30m1000n20m""","re.findall('([0-9]+)([A-Z])', '20M10000N80M')" |
get random sample from list while maintaining ordering of items?,"rand_smpl = [mylist[i] for i in sorted(random.sample(range(len(mylist)), 4))]" |
python regular expression match whole word,"re.search('\\bis\\b', your_string)" |
named tuples in a list,a = [mynamedtuple(*el) for el in a] |
how to modify a variable inside a lambda function?,"myFunc(lambda a, b: iadd(a, b))" |
create a list that contain each line of a file,"my_list = [line.split(',') for line in open('filename.txt')]" |
how to serve static files in flask,app.run() |
no minor grid lines on the x-axis only,"axes.xaxis.grid(False, which='minor')" |
get a list of indices of non zero elements in a list `a`,"[i for i, e in enumerate(a) if e != 0]" |
how can i send variables to jinja template from a flask decorator?,return render_template('template.html') |
regex punctuation split [python],"re.split('\\W+', 'Words, words, words.')" |
how to convert an ordereddict into a regular dict in python3,"dict(OrderedDict([('method', 'constant'), ('data', '1.225')]))" |
how to use one app to satisfy multiple urls in django,"urlpatterns = patterns('', ('', include('myapp.urls')))" |
convert dictionary of pairs `d` to a list of tuples,"[(v, k) for k, v in d.items()]" |
remove items from a list while iterating,somelist = [x for x in somelist if not determine(x)] |
return multiple lists from comprehension in python,"x, y = zip(*[(i, -1 * j) for i, j in enumerate(range(10))])" |
python: how to remove values from 2 lists based on what's in 1 list,ind = [i for i in range(len(yVar)) if yVar[i] < 100] |
how to count the number of words in a sentence?,len(s.split()) |
standard way to open a folder window in linux?,"os.system('xdg-open ""%s""' % foldername)" |
fill missing indices in pandas,x.resample('D').fillna(0) |
python sorting - a list of objects,somelist.sort(key=lambda x: x.resultType) |
python regular expression to replace everything but specific words,"print(re.sub('(.+?)(going|you|$)', subit, s))" |
get a utf-8 string literal representation of byte string `x`,"""""""x = {}"""""".format(x.decode('utf8')).encode('utf8')" |
find all the occurrences of a character in a string,"[x.start() for x in re.finditer('\\|', str)]" |
python: confusions with urljoin,"urljoin('http://some/more/', '/thing')" |
how can i concatenate a series onto a dataframe with pandas?,"pd.concat([students, pd.DataFrame(marks)], axis=1)" |
"distance between numpy arrays, columnwise","arr2.T[numpy.array(zip(list(range(0, 3)), list(range(1, 4))))]" |
how do i make python to wait for a pressed key,input('Press Enter to continue...') |
does anybody know of a good example of functional testing a python tkinter application?,Mainscreen() |
taking a screenshot with pyglet [fix'd],pyglet.app.run() |
deploy flask app as windows service,app.run(host='192.168.1.6') |
throw an exception with message 'this is the exception you expect to handle',raise Exception('This is the exception you expect to handle') |
fors in python list comprehension,[y for y in x for x in data] |
finding index of an item closest to the value in a list that's not entirely sorted,"min(list(range(len(a))), key=lambda i: abs(a[i] - 11.5))" |
python - how to sort a list of lists by the fourth element in each list?,unsorted_list.sort(key=lambda x: x[3]) |
"trimming a string "" hello\n"" by space",' Hello\n'.strip(' ') |
"python ""extend"" for a dictionary",a.update(b) |
delete items from list `my_list` if the item exist in list `to_dell`,my_list = [[x for x in sublist if x not in to_del] for sublist in my_list] |
anchor or lock text to a marker in matplotlib,plt.show() |
sql alchemy - how to delete from a model instance?,session.delete(instance) |
get a relative path of file 'my_file' into variable `fn`,"fn = os.path.join(os.path.dirname(__file__), 'my_file')" |
get a list `mylist` from 1 to 10,myList = [i for i in range(10)] |
pandas groupby: how to get a union of strings,"df.groupby('A')['C'].apply(lambda x: '{%s}' % ', '.join(x))" |
python: passing a function name as an argument in a function,var = dork1 |
convert string '2011221' into a datetime object using format '%y%w%w',"datetime.strptime('2011221', '%Y%W%w')" |
"pyramid on app engine gets ""invalidresponseerror: header values must be str, got 'unicode'",self.redirect('/home.view') |
howto determine file owner on windows using python without pywin32,"subprocess.call('dir /q', shell=True)" |
how can i parse a comma delimited string into a list (caveat)?,"['test, a', 'foo,bar"",baz', 'bar \xc3\xa4 baz']" |
download a remote image and save it to a django model,imgfile = models.ImageField(upload_to='images/%m/%d') |
"convert js date object 'tue, 22 nov 2011 06:00:00 gmt' to python datetime","datetime.strptime('Tue, 22 Nov 2011 06:00:00 GMT', '%a, %d %b %Y %H:%M:%S %Z')" |
is there a way to use two if conditions in list comprehensions in python,"[i for i in my_list if not i.startswith(('91', '18'))]" |
creating a dictionary with list of lists in python,inlinkDict[docid] = adoc[1:] if adoc[1:] else 0 |
random strings in python,return ''.join(random.choice(string.lowercase) for i in range(length)) |
how to create a python dictionary with double quotes as default quote format?,"print('{%s}' % ', '.join([('""%s"": ""%s""' % (k, v)) for k, v in list(pairs.items())]))" |
"how to compress with 7zip instead of zip, code changing","subprocess.call(['7z', 'a', filename + '.7z', '*.*'])" |
how to convert a python set to a numpy array?,numpy.array(list(c)) |
how do i move the last item in a list to the front in python?,a = a[-1:] + a[:-1] |
django - get distinct dates from timestamp,return qs.values('date').annotate(Sum('amount')).order_by('date') |
splitting a string based on a certain set of words,"result.extend(re.split('_(?:f?or|and)_', s))" |