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Multiply two Series with MultiIndex in pandas,"data_3levels.unstack('l3').mul(data_2levels, axis=0).stack()" |
How to extract first two characters from string using regex,"df.c_contofficeID.str.replace('^12', '').to_frame()" |
How do I get the index of the largest list inside a list of lists using Python?,"max(enumerate(props), key=lambda tup: len(tup[1]))" |
How to get a value from every column in a Numpy matrix,(M == 0).T.nonzero() |
How do I can format exception stacktraces in Python logging?,logging.exception('ZeroDivisionError: {0}'.format(e)) |
Sort a numpy array according to 2nd column only if values in 1st column are same,"a[np.lexsort(a[:, ::-1].T)]" |
How to show matplotlib plots in python,"plt.plot(x, y)" |
How to calculate mean in python?,numpy.mean(gp2) |
How to add multiple values to a dictionary key in python?,a[key].append(2) |
switching keys and values in a dictionary in python,"my_dict2 = {y: x for x, y in my_dict.items()}" |
Remove attribute from all MongoDB documents using Python and PyMongo,"mongo.db.collection.update({}, {'$unset': {'parent.toremove': 1}}, multi=True)" |
How can I use named arguments in a decorator?,"return func(*args, **kwargs)" |
Generate random UTF-8 string in Python,print('A random string: ' + get_random_unicode(10)) |
Proper way to store GUID in sqlite,"c.execute('CREATE TABLE test (guid GUID PRIMARY KEY, name TEXT)')" |
How to get the size of tar.gz in (MB) file in python,os.path.getsize('large.tar.gz') >> 20 |
How to insert / retrieve a file stored as a BLOB in a MySQL db using python,"cursor.execute(sql, (thedata,))" |
Python pandas: Keep selected column as DataFrame instead of Series,"df.iloc[:, ([0])]" |
Python Numpy: how to count the number of true elements in a bool array,"sum([True, True, True, False, False])" |
How can I reverse parts of sentence in python?,return ' '.join(word[::-1] for word in sentence.split()) |
Problems while trying to generate pandas dataframe columns from regulars expressions?,"print(pd.DataFrame(list(file_to_adverb_dict.items()), columns=['file_names', 'col1']))" |
Python3: Conditional extraction of keys from a dictionary with comprehension,"[key for key, val in list(dct.items()) if val]" |
How to convert Nonetype to int or string?,int(0 if value is None else value) |
Remove dtype at the end of numpy array,"data = np.array(data, dtype='float')" |
Python/Matplotlib - Is there a way to make a discontinuous axis?,"ax2.plot(x, y, 'bo')" |
How do I avoid the capital placeholders in python's argparse module?,"parser.add_argument('-c', '--chunksize', type=int, help='no metavar specified')" |
Make Tkinter widget take focus,root.mainloop() |
Is it possible to have multiple statements in a python lambda expression?,"[heapq.nsmallest(x, 2)[1] for x in list_of_lists]" |
How to avoid overlapping of labels & autopct in a matplotlib pie chart?,"plt.savefig('piechart.png', bbox_inches='tight')" |
modify list element with list comprehension in python,a = [(b + 4 if b < 0 else b) for b in a] |
More elegant way to implement regexp-like quantifiers,"['x', ' ', 'y', None, ' ', 'z']" |
"python - creating dictionary from comma-separated lines, containing nested values","{'A': '15', 'C': 'false', 'B': '8', 'D': '[somevar, a=0.1, b=77, c=true]'}" |
Python Print String To Text File,text_file.write('Purchase Amount: {0}'.format(TotalAmount)) |
How do I reverse a part (slice) of a list in Python?,b = a[:] |
How to specify column names while reading an Excel file using Pandas?,"df.columns = ['W', 'X', 'Y', 'Z']" |
Creating a custom Spark RDD in Python,assert rdd.squares().collect() == rdd.map(lambda x: x * x).collect() |
How can I add an additional row and column to an array?,"L.append([7, 8, 9])" |
python regex to match multi-line preprocessor macro,"""""""^[ \\t]*#define(.*\\\\\\n)+.*$""""""" |
Grammatical List Join in Python,"print(', '.join(data[:-2] + [' and '.join(data[-2:])]))" |
python load zip with modules from memory,zipfile.ZipFile(zipbytes) |
How to generate strong one time session key for AES in python,random_key = os.urandom(16) |
smartest way to join two lists into a formatted string,"c = ', '.join('%s=%s' % t for t in zip(a, b))" |
numpy element-wise multiplication of an array and a vector,"np.allclose(a, b)" |
How to join list in Python but make the last separator different?,"','.join(my_list[:-1]) + '&' + my_list[-1]" |
How can I plot hysteresis in matplotlib?,fig = plt.figure() |
How to declare ports in Cloud9 using Python,"http_server.listen(int(os.environ.get('PORT')), address=os.environ['IP'])" |
Finding whether a list contains a particular numpy array,"any(np.array_equal(np.array([[0, 0], [0, 0]]), x) for x in my_list)" |
Iterating over a numpy array,"[(x, y) for x, y in numpy.ndindex(a.shape)]" |
How to customize the auth.User Admin page in Django CRUD?,"admin.site.register(User, UserAdmin)" |
python pandas: rename single column label in multi-index dataframe,"df.columns.set_levels(['one', 'two'], level=0, inplace=True)" |
"I need to convert a string to a list in python 3, how would I do this?",l = ast.literal_eval(s) |
matplotlib: change yaxis tick labels,plt.draw() |
Vectorizing / Contrasting a Dataframe with Categorical Variables,df.apply(lambda x: pd.factorize(x)[0]) |
Pandas fillna() based on specific column attribute,df.loc[(df['Type'] == 'Dog') & df['Killed']] |
"In Python, how do I know when a process is finished?",self.process.terminate() |
Converting html to text with Python,soup = BeautifulSoup(html) |
Python string formatting: reference one argument multiple times,"""""""{0} {1} {1}"""""".format('foo', 'bar')" |
"Iterate over a pair of iterables, sorted by an attribute","sorted(chain(a, b), key=lambda x: x.name)" |
Remove duplicate dict in list in Python,"[{'a': 123, 'b': 1234}, {'a': 3222, 'b': 1234}]" |
Pandas: joining items with same index,pd.DataFrame(s.groupby(level=0).apply(list).to_dict()) |
Passing an argument to a python script and opening a file,name = sys.argv[1] |
Modify a Data Frame column with list comprehension,"df = pd.DataFrame(['some', 'short', 'string', 'has', 'foo'], columns=['col1'])" |
How to test if GTK+ dialog has been created?,Gtk.main() |
Resize fields in Django Admin,"admin.site.register(YourModel, YourModelAdmin)" |
Taking the floor of a float,int(3.1415) |
Multiple levels of 'collection.defaultdict' in Python,d = defaultdict(lambda : defaultdict(int)) |
convert strings into python dict,my_dict = ast.literal_eval('{{{0}}}'.format(my_string)) |
How to make a FigureCanvas fit a Panel?,"self.axes.imshow(self.data, interpolation='quadric', aspect='auto')" |
Python: Setting an element of a Numpy matrix,"a[i, j] = 5" |
Python Multidimensional Arrays - most efficient way to count number of non-zero entries,sum(1 for row in rows for i in row if i) |
How do I convert a list of ascii values to a string in python?,""""""""""""".join(map(chr, L))" |
Convert bytes to bits in python,c.bin[2:] |
How can i make tabs in pygtk closable?,gtk.main() |
How can I get the current contents of an element in webdriver,driver.get('http://www.w3c.org') |
How to declare an array in python,[0] * 10000 |
Python: Convert format string to regular expression,print(pattern.match('something/foo-en-gb/file.txt').groupdict()) |
How to remove specific elements in a numpy array,"b = np.delete(a, [2, 3, 6])" |
Is there a way to extract a dict in Python into the local namespace?,locals().update(my_dict) |
List comprehension to extract a list of tuples from dictionary,"[(movie_dict['title'], movie_dict['year']) for movie_dict in movie_dicts]" |
List manipulation in python,"var1, var2, var3 = (ll + [None] * 3)[:3]" |
How to plot time series in python,plt.show() |
Python summing elements of one dict if the have a similar key(tuple),"{k: sum(v) for k, v in list(trimmed.items())}" |
How to make a timer program in Python,time.sleep(1) |
Speed up loading 24-bit binary data into 16-bit numpy array,"output = np.frombuffer(data, 'b').reshape(-1, 3)[:, 1:].flatten().view('i2')" |
Get python class object from string,"print(getattr(somemodule, class_name))" |
Writing a list of tuples to a text file in Python,f.write(' '.join(str(s) for s in t) + '\n') |
Closed lines in matplotlib contour plots,plt.savefig('test.pdf') |
Add column to dataframe with default value,df['Name'] = 'abc' |
How can I determine the byte length of a utf-8 encoded string in Python?,"def utf8len(s): |
return len(s.encode('utf-8'))" |
How to get the size of tar.gz in (MB) file in python,os.path.getsize('flickrapi-1.2.tar.gz') |
"matplotlib, define size of a grid on a plot",plt.show() |
Creating a timer in python,time.sleep(1500) |
How to read the file contents from a file?,"input = open(fullpath, 'rb')" |
How to set background color in a chart in xlsxwriter,"chart.add_series({'values': '=Sheet1!$C$1:$C$5', 'fill': {'color': 'yellow'}})" |
matplotlib plot datetime in pandas DataFrame,df['date_int'] = df.date.astype(np.int64) |
Python - How to cut a string in Python?,s.split('&') |
How to print a pdf file to stdout using python?,print(pdf_file.read()) |
How to set Bokeh legend font?,legend().orientation = 'top_left' |
"Distance between numpy arrays, columnwise",(dist ** 2).sum(axis=1) ** 0.5 |
Python: How to round 123 to 100 instead of 100.0?,"int(round(123, -2))" |
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