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Limit the number of sentences in a string,"re.match('(.*?[.?!](?:\\s+.*?[.?!]){0,1})', phrase).group(1)" |
Split string into strings of repeating elements,"print([a for a, b in re.findall('((\\w)\\2*)', s)])" |
How does this function to remove duplicate characters from a string in python work?,print(' '.join(OrderedDict.fromkeys(s))) |
How does this function to remove duplicate characters from a string in python work?,print(' '.join(set(s))) |
How can i list only the folders in zip archive in Python?,[x for x in file.namelist() if x.endswith('/')] |
How to find the count of a word in a string?,input_string.count('Hello') |
Python: reduce (list of strings) -> string,print('.'.join([item[0] for item in data])) |
Dumping subprcess output in a file in append mode,fh1.seek(2) |
list of ints into a list of tuples python,"print(zip(my_list[0::2], my_list[1::2]))" |
list of ints into a list of tuples python,"my_new_list = zip(my_list[0::2], my_list[1::2])" |
"How to fix: ""UnicodeDecodeError: 'ascii' codec can't decode byte""",sys.setdefaultencoding('utf8') |
Python datetime to string without microsecond component,datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S') |
How to retrieve only arabic texts from a string using regular expression?,"print(re.findall('[\\u0600-\\u06FF]+', my_string))" |
How to group DataFrame by a period of time?,df.groupby(df.index.map(lambda t: t.minute)) |
Accessing elements of python dictionary,dict['Apple']['American'] |
How to remove rows with null values from kth column onward in python,"df2.dropna(subset=['three', 'four', 'five'], how='all')" |
How do I insert a list at the front of another list?,"a.insert(0, k)" |
How do I insert a list at the front of another list?,a = a[:n] + k + a[n:] |
Pyhon - Best way to find the 1d center of mass in a binary numpy array,np.flatnonzero(x).mean() |
Keep only date part when using pandas.to_datetime,df['just_date'] = df['dates'].dt.date |
Removing one list from another,[x for x in a if x not in b] |
How do I transform a multi-level list into a list of strings in Python?,[''.join(x) for x in a] |
How do I transform a multi-level list into a list of strings in Python?,"list(map(''.join, a))" |
Matching blank lines with regular expressions,"re.split('\n\\s*\n', s)" |
Merging items in a list - Python,"from functools import reduce |
reduce(lambda x, y: 10 * x + y, [1, 2, 3, 4, 5])" |
Convert float to comma-separated string,"""""""{0:,.2f}"""""".format(24322.34)" |
How to pass dictionary items as function arguments in python?,my_function(**data) |
get line count,sum((1 for line in open('myfile.txt'))) |
How to round integers in python,"print(round(1123.456789, -1))" |
Sorting list based on values from another list?,"[x for y, x in sorted(zip(Y, X))]" |
Sorting list based on values from another list?,"[x for y, x in sorted(zip(Y, X))]" |
How to get week number in Python?,"datetime.date(2010, 6, 16).isocalendar()[1]" |
Select multiple ranges of columns in Pandas DataFrame,"df.iloc[:, (np.r_[1:10, (15), (17), 50:100])]" |
Python Pandas: Multiple aggregations of the same column,"df.groupby('dummy').agg({'returns': [np.mean, np.sum]})" |
convert string to lowercase,s.lower() |
convert string to lowercase,s.decode('utf-8').lower() |
How to download a file via FTP with Python ftplib,"ftp.retrbinary('RETR %s' % filename, file.write)" |
How do I increase the timeout for imaplib requests?,"urlfetch.fetch(url, deadline=10 * 60)" |
Output first 100 characters in a string,print(my_string[0:100]) |
matplotlib Legend Markers Only Once,legend(numpoints=1) |
Python - How to calculate equal parts of two dictionaries?,"dict((x, set(y) & set(d1.get(x, ()))) for x, y in d2.items())" |
load csv into 2D matrix with numpy for plotting,"numpy.loadtxt(open('test.csv', 'rb'), delimiter=',', skiprows=1)" |
Django database query: How to filter objects by date range?,"Sample.objects.filter(date__range=['2011-01-01', '2011-01-31'])" |
Django database query: How to filter objects by date range?,"Sample.objects.filter(date__year='2011', date__month='01')" |
syntax for creating a dictionary into another dictionary in python,"d['dict3'] = {'spam': 5, 'ham': 6}" |
How to apply numpy.linalg.norm to each row of a matrix?,"numpy.apply_along_axis(numpy.linalg.norm, 1, a)" |
How to merge two Python dictionaries in a single expression?,"dict((k, v) for d in dicts for k, v in list(d.items()))" |
Python. Convert escaped utf string to utf-string,print('your string'.decode('string_escape')) |
Counting the number of True Booleans in a Python List,"sum([True, True, False, False, False, True])" |
Matplotlib.animation: how to remove white margin,"fig.set_size_inches(w, h, forward=True)" |
python string format() with dict with integer keys,'hello there %(5)s' % {'5': 'you'} |
Python - converting a string of numbers into a list of int,"map(int, example_string.split(','))" |
Python - converting a string of numbers into a list of int,"[int(s) for s in example_string.split(',')]" |
Python list of tuples to list of int,x = [i[0] for i in x] |
Python list of tuples to list of int,"y = map(operator.itemgetter(0), x)" |
Python list of tuples to list of int,y = [i[0] for i in x] |
How do I extract all the values of a specific key from a list of dictionaries?,results = [item['value'] for item in test_data] |
ISO Time (ISO 8601) in Python,datetime.datetime.now().isoformat() |
ISO Time (ISO 8601) in Python,datetime.datetime.utcnow().isoformat() |
Merging data frame columns of strings into one single column in Pandas,"df.apply(' '.join, axis=0)" |
pandas Subtract Dataframe with a row from another dataframe,"pd.DataFrame(df.values - df2.values, columns=df.columns)" |
How can I detect DOS line breaks in a file?,"print(open('myfile.txt', 'U').read())" |
Python - read text file with weird utf-16 format,print(line.decode('utf-16-le').split()) |
Python - read text file with weird utf-16 format,"file = io.open('data.txt', 'r', encoding='utf-16-le')" |
Finding common rows (intersection) in two Pandas dataframes,"s1 = pd.merge(df1, df2, how='inner', on=['user_id'])" |
How can I check a Python unicode string to see that it *actually* is proper Unicode?,foo.decode('utf8').encode('utf8') |
Numpy array dimensions,a.shape |
Numpy array dimensions,N.shape(a) |
Numpy array dimensions,N.shape(a) |
Numpy array dimensions,a.shape |
How to search a list of tuples in Python,"[i for i, v in enumerate(L) if v[0] == 53]" |
convert a string of bytes into an int (python),"struct.unpack('<L', 'y\xcc\xa6\xbb')[0]" |
How to get the values from a NumPy array using multiple indices,"arr[[0, 1, 1], [1, 0, 2]]" |
what's a good way to combinate through a set?,list(powerset('abcd')) |
Converting from a string to boolean in Python?,"s in ['true', '1', 't', 'y', 'yes', 'yeah', 'yup', 'certainly', 'uh-huh']" |
How do I url encode in Python?,urllib.parse.quote('http://spam.com/go/') |
How can I get the output of a matplotlib plot as an SVG?,plt.savefig('test.svg') |
Counting array elements in Python,len(myArray) |
Python Embedding in C++ : ImportError: No module named pyfunction,"sys.path.insert(0, './path/to/your/modules/')" |
How to plot with x-axis at the top of the figure?,ax.xaxis.set_ticks_position('top') |
Python - Bulk Select then Insert from one DB to another,cursor.execute('INSERT OR REPLACE INTO master.table1 SELECT * FROM table1') |
How do I use a regular expression to match a name?,"re.match('[a-zA-Z][\\w-]*\\Z', 'A\n')" |
How do I use a regular expression to match a name?,"re.match('[a-zA-Z][\\w-]*$', '!A_B')" |
Convert hex string to int,"int('deadbeef', 16)" |
Convert hex string to int,"int('a', 16)" |
Convert hex string to int,"int('0xa', 16)" |
Convert hex string to int,"int(s, 16)" |
Convert hex string to int,"int(hexString, 16)" |
How to print variables without spaces between values,"print('Value is ""' + str(value) + '""')" |
How to print variables without spaces between values,"print('Value is ""{}""'.format(value))" |
How do I convert an array to string using the jinja template engine?,{{tags | join(' ')}} |
get a list of locally installed Python modules,help('modules') |
Slicing a multidimensional list,[[[x[0]] for x in listD[i]] for i in range(len(listD))] |
Sort a string in lexicographic order python,"sorted(s, key=str.upper)" |
Sort a string in lexicographic order python,"sorted(sorted(s), key=str.upper)" |
Sort a string in lexicographic order python,"sorted(s, key=str.lower)" |
Compare Python Pandas DataFrames for matching rows,"pd.merge(df1, df2, on=['A', 'B', 'C', 'D'], how='inner')" |
get keys correspond to a value in dictionary,"dict((v, k) for k, v in map.items())" |
How to decode unicode raw literals to readable string?,s.decode('unicode_escape') |
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