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Merge DataFrames in Pandas using the mean,"pd.concat((df1, df2), axis=1).mean(axis=1)"
Average values in two Numpy arrays,"np.mean(np.array([old_set, new_set]), axis=0)"
Changing marker's size in matplotlib,"scatter(x, y, s=500, color='green', marker='h')"
split items in list,"result = [item for word in words for item in word.split(',')]"
Converting JSON date string to python datetime,"datetime.datetime.strptime('2012-05-29T19:30:03.283Z', '%Y-%m-%dT%H:%M:%S.%fZ')"
python comprehension loop for dictionary,sum(item['one'] for item in list(tadas.values()))
How to base64 encode a PDF file in Python,"a = open('pdf_reference.pdf', 'rb').read().encode('base64')"
split a string in python,a.rstrip().split('\n')
split a string in python,a.split('\n')[:-1]
How can I return HTTP status code 204 from a Django view?,return HttpResponse(status=204)
check if a value exist in a list,(7 in a)
check if a value exist in a list,('a' in a)
Sorting JSON data by keys value,"sorted(results, key=itemgetter('year'))"
How do I get current URL in Selenium Webdriver 2 Python?,print(browser.current_url)
Python: Split string with multiple delimiters,"re.split('; |, ', str)"
Unescaping Characters in a String with Python,"""""""\\u003Cp\\u003E"""""".decode('unicode-escape')"
Convert string date to timestamp in Python,"time.mktime(datetime.datetime.strptime(s, '%d/%m/%Y').timetuple())"
Convert string date to timestamp in Python,"int(datetime.datetime.strptime('01/12/2011', '%d/%m/%Y').strftime('%s'))"
How to get http headers in flask?,request.headers['your-header-name']
How to subset a data frame using Pandas based on a group criteria?,df.groupby('User')['X'].filter(lambda x: x.sum() == 0)
How to subset a data frame using Pandas based on a group criteria?,df.loc[df.groupby('User')['X'].transform(sum) == 0]
How to subset a data frame using Pandas based on a group criteria?,df.groupby('User')['X'].transform(sum) == 0
How do I find an element that contains specific text in Selenium Webdriver (Python)?,"driver.find_elements_by_xpath(""//*[contains(text(), 'My Button')]"")"
Convert pandas group by object to multi-indexed Dataframe,"df.set_index(['Name', 'Destination'])"
How do I coalesce a sequence of identical characters into just one?,"print(re.sub('(\\W)\\1+', '\\1', a))"
How to open a file with the standard application?,"os.system('start ""$file""')"
Convert a Unicode string to a string,"unicodedata.normalize('NFKD', title).encode('ascii', 'ignore')"
Convert a Unicode string to a string,"a.encode('ascii', 'ignore')"
Get a filtered list of files in a directory,"files = [f for f in os.listdir('.') if re.match('[0-9]+.*\\.jpg', f)]"
Adding a 1-D Array to a 3-D array in Numpy,"np.zeros((6, 9, 20)) + np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])[(None), :, (None)]"
Adding a 1-D Array to a 3-D array in Numpy,"np.zeros((6, 9, 20)) + np.array([1, 2, 3, 4, 5, 6, 7, 8, 9]).reshape((1, 9, 1))"
How can I launch an instance of an application using Python?,os.system('start excel.exe <path/to/file>')
What is the proper way to print a nested list with the highest value in Python,"print(max(x, key=sum))"
Functional statement in Python to return the sum of certain lists in a list of lists,sum(len(y) for y in x if len(y) > 1)
Python - Insert numbers in string between quotes,"re.sub('(\\d+)', '""\\1""', 'This is number 1 and this is number 22')"
Multiplying Rows and Columns of Python Sparse Matrix by elements in an Array,"numpy.dot(numpy.dot(a, m), a)"
How to check if something exists in a postgresql database using django?,"Entry.objects.filter(name='name', title='title').exists()"
Sort a nested list by two elements,"sorted(l, key=lambda x: (-int(x[1]), x[0]))"
Django - How to simply get domain name?,request.META['HTTP_HOST']
Python Regex Get String Between Two Substrings,"re.findall(""api\\('(.*?)'"", ""api('randomkey123xyz987', 'key', 'text')"")"
Call Perl script from Python,"subprocess.call(['/usr/bin/perl', './uireplace.pl', var])"
Pythonic way to print list items,print('\n'.join(str(p) for p in myList))
update dictionary with dynamic keys and values in python,mydic.update({i: o['name']})
how to split a unicode string into list,list(stru.decode('utf-8'))
Convert UTF-8 with BOM to UTF-8 with no BOM in Python,u = s.decode('utf-8-sig')
How do I do a not equal in Django queryset filtering?,Entry.objects.filter(~Q(id=3))
How can I lookup an attribute in any scope by name?,"getattr(__builtins__, 'range')"
"How to make a python script which can logoff, shutdown, and restart a computer?","subprocess.call(['shutdown', '/r', '/t', '900'])"
"How to make a python script which can logoff, shutdown, and restart a computer?","subprocess.call(['shutdown', '/s'])"
"How to make a python script which can logoff, shutdown, and restart a computer?","subprocess.call(['shutdown', '/a '])"
"How to make a python script which can logoff, shutdown, and restart a computer?","subprocess.call(['shutdown', '/l '])"
"How to make a python script which can logoff, shutdown, and restart a computer?","subprocess.call(['shutdown', '/r'])"
How to erase the file contents of text file in Python?,"open('filename', 'w').close()"
How to erase the file contents of text file in Python?,"open('file.txt', 'w').close()"
Pandas DataFrame to List of Dictionaries,df.to_dict('index')
Pandas DataFrame to List of Dictionaries,df.to_dict('records')
pandas dataframe groupby datetime month,df.groupby(pd.TimeGrouper(freq='M'))
How do I divide the members of a list by the corresponding members of another list in Python?,"[(c / t) for c, t in zip(conversions, trials)]"
sort dict by value python,"sorted(data, key=data.get)"
sort dict by value python,sorted(data.values())
sort dict by value python,"sorted(list(data.items()), key=lambda x: x[1])"
sort dict by value python,"sorted(list(data.items()), key=lambda x: x[1])"
How do I display current time using Python + Django?,now = datetime.datetime.now().strftime('%H:%M:%S')
Find the nth occurrence of substring in a string,"""""""foo bar bar bar"""""".replace('bar', 'XXX', 1).find('bar')"
How do you check the presence of many keys in a Python dictinary?,"set(['stackoverflow', 'google']).issubset(sites)"
Replace part of a string in Python?,"stuff.replace(' and ', '/')"
How to use `numpy.savez` in a loop for save more than one array?,"np.savez(tmp, *[getarray[0], getarray[1], getarray[8]])"
time offset,"t = datetime.datetime.now()
(t - datetime.timedelta(hours=1, minutes=10))"
time offset,"(t - datetime.timedelta(hours=1, minutes=10))"
time offset,"dt = datetime.datetime.combine(datetime.date.today(), t)"
time offset,dt -= datetime.timedelta(hours=5)
Manipulating binary data in Python,print(data.encode('hex'))
Manipulating binary data in Python,print(' '.join([str(ord(a)) for a in data]))
python - iterating over a subset of a list of tuples,[x for x in l if x[1] == 1]
How to read stdin to a 2d python array of integers?,a.fromlist([int(val) for val in stdin.read().split()])
Is there a way to refer to the entire matched expression in re.sub without the use of a group?,"print(re.sub('[_%^$]', '\\\\\\g<0>', line))"
How to use regular expression in lxml xpath?,"doc.xpath(""//a[starts-with(text(),'some text')]"")"
Compare elements of a list of lists and return a list,zip(*a)
Convert list of strings to int,"[map(int, sublist) for sublist in lst]"
Convert list of strings to int,[[int(x) for x in sublist] for sublist in lst]
Numpy: find index of elements in one array that occur in another array,"np.where(np.in1d(A, B))[0]"
Split dictionary of lists into list of dictionaries,"[{'key1': a, 'key2': b} for a, b in zip(d['key1'], d['key2'])]"
Split dictionary of lists into list of dictionaries,"map(dict, zip(*[[(k, v) for v in value] for k, value in list(d.items())]))"
Get Last Day of the Month,"calendar.monthrange(2002, 1)"
Get Last Day of the Month,"calendar.monthrange(2008, 2)"
Get Last Day of the Month,"calendar.monthrange(2100, 2)"
Get Last Day of the Month,"calendar.monthrange(year, month)[1]"
Get Last Day of the Month,"monthrange(2012, 2)"
Get Last Day of the Month,"(datetime.date(2000, 2, 1) - datetime.timedelta(days=1))"
Calling an external command,from subprocess import call
Calling an external command,os.system('some_command with args')
Calling an external command,os.system('some_command < input_file | another_command > output_file')
Calling an external command,stream = os.popen('some_command with args')
Calling an external command,"print(subprocess.Popen('echo Hello World', shell=True, stdout=subprocess.PIPE).stdout.read())"
Calling an external command,print(os.popen('echo Hello World').read())
Calling an external command,"return_code = subprocess.call('echo Hello World', shell=True)"
Calling an external command,"call(['ls', '-l'])"
Url decode UTF-8 in Python,print(urllib.parse.unquote(url).decode('utf8'))
Url decode UTF-8 in Python,url = urllib.parse.unquote(url).decode('utf8')