text stringlengths 4 1.08k |
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Delete letters from string,""""""""""""".join(filter(str.isdigit, '12454v'))" |
applying regex to a pandas dataframe,df['Season'].str.split('-').str[0].astype(int) |
Sort tuples based on second parameter,my_list.sort(key=lambda x: x[1]) |
Find all occurrences of a substring in Python,"[m.start() for m in re.finditer('(?=tt)', 'ttt')]" |
Find all occurrences of a substring in Python,"[m.start() for m in re.finditer('test', 'test test test test')]" |
re.split with spaces in python,"re.findall('\\s+|\\S+', s)" |
Working with set_index in Pandas DataFrame,"rdata.set_index(['race_date', 'track_code', 'race_number'])" |
recursively go through all subdirectories and read files,"for (root, subFolders, files) in os.walk(rootdir): |
pass" |
sorting a list of dictionary values by date in python,"list.sort(key=lambda item: item['date'], reverse=True)" |
How to truncate a string using str.format in Python?,"""""""{:.5}"""""".format('aaabbbccc')" |
How do I convert a string of hexadecimal values to a list of integers?,"struct.unpack('11B', s)" |
Finding the index of an item given a list containing it in Python,"[i for i, j in enumerate(['foo', 'bar', 'baz']) if j == 'foo']" |
How to generate all permutations of a list in Python,"print(list(itertools.product([1, 2, 3], [4, 5, 6])))" |
How to generate all permutations of a list in Python,"itertools.permutations([1, 2, 3])" |
Remove punctuation from Unicode formatted strings,"return re.sub('\\p{P}+', '', text)" |
manually throw/raise an exception,raise ValueError('A very specific bad thing happened') |
Manually raising (throwing) an exception,raise Exception('I know Python!') |
Manually raising (throwing) an exception,raise Exception('I know python!') |
Manually raising (throwing) an exception,"raise ValueError('represents a hidden bug, do not catch this')" |
Manually raising (throwing) an exception,raise Exception('This is the exception you expect to handle') |
Manually raising (throwing) an exception,raise ValueError('A very specific bad thing happened') |
Manually raising (throwing) an exception,raise RuntimeError('specific message') |
Manually raising (throwing) an exception,"raise AssertionError(""Unexpected value of 'distance'!"", distance)" |
Clear text from textarea with selenium,driver.find_element_by_id('foo').clear() |
Clear text from textarea with selenium,driver.find_element_by_id('foo').clear() |
Convert an IP string to a number and vice versa,"socket.inet_ntoa(struct.pack('!L', 2130706433))" |
How to rearrange Pandas column sequence?,"df = df[['x', 'y', 'a', 'b']]" |
How to call Base Class's __init__ method from the child class?,"super(ChildClass, self).__init__(*args, **kwargs)" |
Sum of all values in a Python dict,sum(d.values()) |
Sum of all values in a Python dict,sum(d.values()) |
Convert Python dictionary to JSON array,"json.dumps(your_data, ensure_ascii=False)" |
numpy array assignment using slicing,"values = np.array([i for i in range(100)], dtype=np.float64)" |
Sort a list of dictionary provided an order,"sorted(list_of_dct, key=lambda x: order.index(list(x.values())[0]))" |
how to change the case of first letter of a string?,return s[0].upper() + s[1:] |
"how to change [1,2,3,4] to '1234' using python",""""""""""""".join([1, 2, 3, 4])" |
Delete every non utf-8 symbols froms string,"line = line.decode('utf-8', 'ignore').encode('utf-8')" |
How to execute a command in the terminal from a Python script?,os.system(command) |
Python MySQL Parameterized Queries,"c.execute('SELECT * FROM foo WHERE bar = %s AND baz = %s', (param1, param2))" |
Convert a string to datetime object in python,"dateobj = datetime.datetime.strptime(datestr, '%Y-%m-%d').date()" |
Concatenate elements of a list 'x' of multiple integers to a single integer,"sum(d * 10 ** i for i, d in enumerate(x[::-1]))" |
convert a list of integers into a single integer,"r = int(''.join(map(str, x)))" |
convert a DateTime string back to a DateTime object of format '%Y-%m-%d %H:%M:%S.%f',"datetime.strptime('2010-11-13 10:33:54.227806', '%Y-%m-%d %H:%M:%S.%f')" |
get the average of a list values for each key in dictionary `d`),"[(i, sum(j) / len(j)) for i, j in list(d.items())]" |
"zip two lists `[1, 2]` and `[3, 4]` into a list of two tuples containing elements at the same index in each list","zip([1, 2], [3, 4])" |
prepend string 'hello' to all items in list 'a',['hello{0}'.format(i) for i in a] |
regex for repeating words in a string `s`,"re.sub('(?<!\\S)((\\S+)(?:\\s+\\2))(?:\\s+\\2)+(?!\\S)', '\\1', s)" |
normalize a pandas dataframe `df` by row,"df.div(df.sum(axis=1), axis=0)" |
swap values in a tuple/list inside a list `mylist`,"map(lambda t: (t[1], t[0]), mylist)" |
Swap values in a tuple/list in list `mylist`,"[(t[1], t[0]) for t in mylist]" |
Find next sibling element in Python Selenium?,"driver.find_element_by_xpath(""//p[@id, 'one']/following-sibling::p"")" |
"find all occurrences of the pattern '\\[[^\\]]*\\]|\\([^\\)]*\\)|""[^""]*""|\\S+' within `strs`","re.findall('\\[[^\\]]*\\]|\\([^\\)]*\\)|""[^""]*""|\\S+', strs)" |
"generate the combinations of 3 from a set `{1, 2, 3, 4}`","print(list(itertools.combinations({1, 2, 3, 4}, 3)))" |
"add multiple columns `hour`, `weekday`, `weeknum` to pandas data frame `df` from lambda function `lambdafunc`","df[['hour', 'weekday', 'weeknum']] = df.apply(lambdafunc, axis=1)" |
BeautifulSoup search string 'Elsie' inside tag 'a',"soup.find_all('a', string='Elsie')" |
"Convert a datetime object `my_datetime` into readable format `%B %d, %Y`","my_datetime.strftime('%B %d, %Y')" |
parse string `s` to int when string contains a number,int(''.join(c for c in s if c.isdigit())) |
add dictionary `{'class': {'section': 5}}` to key 'Test' of dictionary `dic`,dic['Test'].update({'class': {'section': 5}}) |
transforming the string `s` into dictionary,"dict(map(int, x.split(':')) for x in s.split(','))" |
How to select element with Selenium Python xpath,"driver.find_element_by_xpath(""//div[@id='a']//a[@class='click']"")" |
"find rows matching `(0,1)` in a 2 dimensional numpy array `vals`","np.where((vals == (0, 1)).all(axis=1))" |
How to delete a record in Django models?,SomeModel.objects.filter(id=id).delete() |
"build a dictionary containing the conversion of each list in list `[['two', 2], ['one', 1]]` to a key/value pair as its items","dict([['two', 2], ['one', 1]])" |
convert list `l` to dictionary having each two adjacent elements as key/value pair,"dict(zip(l[::2], l[1::2]))" |
assign float 9.8 to variable `GRAVITY`,GRAVITY = 9.8 |
"separate numbers from characters in string ""30m1000n20m""","re.findall('(([0-9]+)([A-Z]))', '20M10000N80M')" |
separate numbers and characters in string '20M10000N80M',"re.findall('([0-9]+|[A-Z])', '20M10000N80M')" |
separate numbers and characters in string '20M10000N80M',"re.findall('([0-9]+)([A-Z])', '20M10000N80M')" |
"Get a list of words from a string `Hello world, my name is...James the 2nd!` removing punctuation","re.compile('\\w+').findall('Hello world, my name is...James the 2nd!')" |
Convert string '03:55' into datetime.time object,"datetime.datetime.strptime('03:55', '%H:%M').time()" |
request url 'https://www.reporo.com/' without verifying SSL certificates,"requests.get('https://www.reporo.com/', verify=False)" |
Extract values not equal to 0 from numpy array `a`,a[a != 0] |
map two lists `keys` and `values` into a dictionary,"new_dict = {k: v for k, v in zip(keys, values)}" |
map two lists `keys` and `values` into a dictionary,"dict((k, v) for k, v in zip(keys, values))" |
map two lists `keys` and `values` into a dictionary,"dict([(k, v) for k, v in zip(keys, values)])" |
find the string matches within parenthesis from a string `s` using regex,"m = re.search('\\[(\\w+)\\]', s)" |
Enable the SO_REUSEADDR socket option in socket object `s` to fix the error `only one usage of each socket address is normally permitted`,"s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)" |
append the sum of each tuple pair in the grouped list `list1` and list `list2` elements to list `list3`,"list3 = [(a + b) for a, b in zip(list1, list2)]" |
converting hex string `s` to its integer representations,[ord(c) for c in s.decode('hex')] |
sort list `student_tuples` by second element of each tuple in ascending and third element of each tuple in descending,"print(sorted(student_tuples, key=lambda t: (-t[2], t[0])))" |
get list of duplicated elements in range of 3,"[y for x in range(3) for y in [x, x]]" |
read the contents of the file 'file.txt' into `txt`,txt = open('file.txt').read() |
divide each element in list `myList` by integer `myInt`,myList[:] = [(x / myInt) for x in myList] |
python: dots in the name of variable in a format string,"""""""Name: {0[person.name]}"""""".format({'person.name': 'Joe'})" |
replace white spaces in dataframe `df` with '_',"df.replace(' ', '_', regex=True)" |
convert date `my_date` to datetime,"datetime.datetime.combine(my_date, datetime.time.min)" |
convert tuple `tst` to string `tst2`,tst2 = str(tst) |
get modified time of file `file`,time.ctime(os.path.getmtime(file)) |
get creation time of file `file`,time.ctime(os.path.getctime(file)) |
get modification time of file `filename`,t = os.path.getmtime(filename) |
get modification time of file `path`,os.path.getmtime(path) |
get modified time of file `file`,print(('last modified: %s' % time.ctime(os.path.getmtime(file)))) |
get the creation time of file `file`,print(('created: %s' % time.ctime(os.path.getctime(file)))) |
get the creation time of file `path_to_file`,return os.path.getctime(path_to_file) |
execute os command ''TASKKILL /F /IM firefox.exe'',os.system('TASKKILL /F /IM firefox.exe') |
split string `string` on whitespaces using a generator,"return (x.group(0) for x in re.finditer(""[A-Za-z']+"", string))" |
Unpack each value in list `x` to its placeholder '%' in string '%.2f',""""""", """""".join(['%.2f'] * len(x))" |
match regex pattern '(\\d+(\\.\\d+)?)' with string '3434.35353',"print(re.match('(\\d+(\\.\\d+)?)', '3434.35353').group(1))" |
replace parentheses and all data within it with empty string '' in column 'name' of dataframe `df`,"df['name'].str.replace('\\(.*\\)', '')" |
create a list `result` containing elements form list `list_a` if first element of list `list_a` is in list `list_b`,result = [x for x in list_a if x[0] in list_b] |
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