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check if multiple rows exist in another dataframe,"pd.merge(df1, df2, indicator=True, how='outer')"
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python: how to order a list based on another list,"sorted(list1, key=lambda x: keyfun(x.split('-')[1], list2))"
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creating a list of dictionaries in python,"[{'A': 1, 'C': 4, 'B': 2, 'D': 4}, {'A': 1, 'C': 4, 'B': 1, 'D': 5}]"
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how can i find the missing value more concisely?,"z = (set(('a', 'b', 'c')) - set((x, y))).pop()"
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how to zip two lists of lists in python?,"[sum(x, []) for x in zip(L1, L2)]"
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reverse list `x`,x[::-1]
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"zip list `a`, `b`, `c` into a list of tuples","[(x + tuple(y)) for x, y in zip(zip(a, b), c)]"
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create a list `files` containing all files in directory '.' that starts with numbers between 0 and 9 and ends with the extension '.jpg',"files = [f for f in os.listdir('.') if re.match('[0-9]+.*\\.jpg', f)]"
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pandas replace zeros with previous non zero value,"df['A'].replace(to_replace=0, method='ffill')"
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how to get the numerical fitting results when plotting a regression in seaborn?,"sns.regplot('rdiff', 'pct', df, corr_func=stats.pearsonr)"
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python datetime to string without microsecond component,datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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how to click on the text button using selenium python,browser.find_element_by_class_name('section-select-all').click()
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get the max string length in list `i`,max(len(word) for word in i)
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iterate through unicode strings and compare with unicode in python dictionary,'\u50b5'.encode('utf-8')
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check if a list has one or more strings that match a regex,"[re.search('\\d', s) for s in lst]"
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how to create new folder?,os.makedirs(newpath)
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how to remove item from a python list if a condition is true?,y = [s for s in x if len(s) == 2]
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python requests can't send multiple headers with same key,"headers = [('X-Attribute', 'A'), ('X-Attribute', 'B')]"
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copy a file with a too long path to another directory in python,"shutil.copyfile('\\\\?\\' + copy_file, dest_file)"
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how to change the size of the sci notation above the y axis in matplotlib?,"plt.rc('font', **{'size': '30'})"
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reshaping array into a square array python,"x.reshape(2, 2, 5).transpose(1, 0, 2).reshape(4, 5)"
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finding common rows (intersection) in two pandas dataframes,"s1 = pd.merge(df1, df2, how='inner', on=['user_id'])"
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pad 'dog' up to a length of 5 characters with 'x',"""""""{s:{c}^{n}}"""""".format(s='dog', n=5, c='x')"
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convert list of tuples to multiple lists in python,"zip(*[(1, 2), (3, 4), (5, 6)])"
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how do i start up remote debugging with pycharm?,sys.path.append('/home/john/app-dependancies/pycharm-debug.egg')
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python values of multiple lists in one list comprehension,"zip(list(range(10)), list(range(10, 0, -1)))"
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python: how to round 123 to 100 instead of 100.0?,"int(round(123, -2))"
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how to remove the left part of a string?,"param, value = line.split('=', 1)"
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how to iterate through rows of a dataframe and check whether value in a column row is nan,df[df['Column2'].notnull()]
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make tkinter toplevel window that doesn't close with parent,root.mainloop()
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how to read stdin to a 2d python array of integers?,a.fromlist([int(val) for val in stdin.read().split()])
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what is the most efficient way to remove a group of indices from a list of numbers in python 2.7?,"return [x for i, x in enumerate(numbers) if i not in indices]"
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pandas: how to plot a barchar with dataframes with labels?,"df.set_index(['timestamp', 'objectId'])['result'].unstack().plot(kind='bar')"
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sorting a list of tuples by the addition of second and third element of the tuple,"sorted(lst, key=lambda x: (sum(x[1:]), x[0]), reverse=True)"
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get all the sentences from a string `text` using regex,"re.split('\\.\\s', text)"
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how to fill an entire line with * characters in python,"""""""{0:*^80}"""""".format('MENU')"
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"split string 'words, words, words.' on punctuation","re.split('\\W+', 'Words, words, words.')"
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convert integer to binary,"your_list = map(int, '{:b}'.format(your_int))"
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serialization of a pandas dataframe,df.to_pickle(file_name)
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sending a file over tcp sockets in python,s.send('Hello server!')
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"converting a list into comma-separated string with ""and"" before the last item - python 2.7","""""""{} and {}"""""".format(', '.join(listy[:-1]), listy[-1])"
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how to remove negative values from a list using lambda functions by python,[x for x in L if x >= 0]
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read a binary file 'test/test.pdf',"f = open('test/test.pdf', 'rb')"
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how to return a static html file as a response in django?,"url('^path/to/url', TemplateView.as_view(template_name='index.html')),"
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slicing a multidimensional list,[[[x[0]] for x in listD[i]] for i in range(len(listD))]
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in tkinter is there any way to make a widget not visible? ,root.mainloop()
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iterating key and items over dictionary `d`,"for (k, v) in list(d.items()):
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pass"
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how to apply slicing on pandas series of strings,s.map(lambda x: x[:2])
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how do i remove rows from a dataframe?,df.drop(x[x].index)
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get the directory name of `path`,os.path.dirname(path)
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how to scale images to screen size in pygame,rect = picture.get_rect()
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change a string of integers separated by spaces to a list of int,"map(int, x.split(' '))"
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"""typeerror: string indices must be integers"" when trying to make 2d array in python","Tablero = array('b', [Boardsize, Boardsize])"
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python-numpy: apply a function to each row of a ndarray,"np.apply_along_axis(mahalanobis_sqdist, 1, d1, mean1, Sig1)"
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if any item of list starts with string?,any(item.startswith('qwerty') for item in myList)
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find lowest value in a list of dictionaries in python,return min(d['id'] for d in l if 'id' in d)
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concatenate items in dictionary in python using list comprehension,"print('\n'.join('%s = %s' % (key, value) for key, value in d.items()))"
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taking the results of a bash command and using it in python,"os.system(""awk '{print $10, $11}' test.txt > test2.txt"")"
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iterate over the lines of a string,do_something_with(line)
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how to get rid of double backslash in python windows file path string?,"""""""C:\\Users\\user\\Desktop\\Filed_055123.pdf"""""""
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"pandas - add a column with value based on exisitng one (bins, qcut)",df.groupby('binned_a').describe().unstack()
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how to plot with x-axis at the top of the figure?,ax.xaxis.set_ticks_position('top')
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how to get yesterday in python,datetime.datetime.now() - datetime.timedelta(days=1)
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python check if all of the following items is in a list,"set(['a', 'b']).issubset(set(l))"
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how to make a window jump to the front?,"window.attributes('-topmost', 0)"
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django - how to filter using queryset to get subset of objects?,Kid.objects.filter(id__in=toy_owners)
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"in python, how to check if a string only contains certain characters?",bool(re.compile('^[a-z0-9\\.]+\\Z').match('1234\n'))
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python - how to refer to relative paths of resources when working with code repository,"fn = os.path.join(os.path.dirname(__file__), 'my_file')"
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run a c# application from python script,subprocess.Popen('move output.txt ./acc/output-%d.txt' % v)
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start a new thread for `myfunction` with parameters 'mystringhere' and 1,"thread.start_new_thread(myfunction, ('MyStringHere', 1))"
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python convert list to dictionary,"d = dict(itertools.zip_longest(fillvalue='', *([iter(l)] * 2)))"
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python / remove special character from string,"print(re.sub('[^\\w.]', '', string))"
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is it possible to plot timelines with matplotlib?,plt.show()
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read file with timeout in python,"os.read(f.fileno(), 50)"
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concatenate a list of numpy arrays `input_list` together into a flattened list of values,np.concatenate(input_list).ravel().tolist()
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first parameter of os.exec*,"os.execv('/bin/echo', ['echo', 'foo', 'bar'])"
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write a binary integer or string to a file in python,"f.write(struct.pack('i', value))"
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python : getting the row which has the max value in groups using groupby,df[df['count'] == df.groupby(['Mt'])['count'].transform(max)]
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normalize the dataframe `df` along the rows,np.sqrt(np.square(df).sum(axis=1))
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"remove white spaces from the end of string "" xyz """,""""""" xyz """""".rstrip()"
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outer product of each column of a 2d array to form a 3d array - numpy,"np.einsum('ij,kj->jik', X, X)"
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get modified time of file `file`,time.ctime(os.path.getmtime(file))
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python: how to read csv file with different separators?,"data = [line[i:i + 12] for i in range(0, len(line), 12)]"
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how can i sum the product of two list items using for loop in python?,"sum(i * j for i, j in zip(a, b))"
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find overlapping matches from a string `hello` using regex,"re.findall('(?=(\\w\\w))', 'hello')"
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make a 0.1 seconds time delay,time.sleep(0.1)
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sorting a list with objects of a class as its items,your_list.sort(key=lambda x: x.anniversary_score)
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python - print tuple elements with no brackets,"print(', ,'.join([str(i[0]) for i in mytuple]))"
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how to use random.shuffle() on a generator? python,random.shuffle(lst)
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pyqt - how to detect and close ui if it's already running?,sys.exit(app.exec_())
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python: built-in keyboard signal/interrupts,time.sleep(1)
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replace comma with dot in a string `original_string` using regex,"new_string = re.sub('""(\\d+),(\\d+)""', '\\1.\\2', original_string)"
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how to print a string without including '\n' in python,sys.stdout.write('text')
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deleting specific control characters(\n \r \t) from a string,"re.sub('[\\t\\n\\r]', ' ', '1\n2\r3\t4')"
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paging depending on grouping of items in django,messages = Message.objects.filter(head=True).order_by('time')[0:15]
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is it possible to add a where clause with list comprehension?,"[(x, f(x)) for x in iterable if f(x)]"
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how do i read the first line of a string?,my_string.splitlines()[0]
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how to remove item from a python list if a condition is true?,x = [i for i in x if len(i) == 2]
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string formatting in python,"""""""[{0}, {1}, {2}]"""""".format(1, 2, 3)"
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