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Python: How to remove empty lists from a list? | list2 = [x for x in list1 if x != []] |
Python: How to remove empty lists from a list? | list2 = [x for x in list1 if x] |
Django view returning json without using template | return HttpResponse(data, mimetype='application/json') |
regex to get all text outside of brackets | re.findall('(.*?)\\[.*?\\]', example_str) |
regex to get all text outside of brackets | re.findall('(.*?)(?:\\[.*?\\]|$)', example_str) |
Matching multiple regex patterns with the alternation operator? | re.findall('\\(.+?\\)|\\w', '(zyx)bc') |
Matching multiple regex patterns with the alternation operator? | re.findall('\\((.*?)\\)|(\\w)', '(zyx)bc') |
Matching multiple regex patterns with the alternation operator? | re.findall('\\(.*?\\)|\\w', '(zyx)bc') |
Perform a string operation for every element in a Python list | elements = ['%{0}%'.format(element) for element in elements] |
start python script as background process from within a python script | subprocess.Popen(['background-process', 'arguments']) |
Python dictionary: Get list of values for list of keys | [mydict[x] for x in mykeys] |
Create dictionary from lists of keys and multiple values | dict([('Name', 'Joe'), ('Age', 22)]) |
Numpy - Averaging multiple columns of a 2D array | data.reshape(-1, j).mean(axis=1).reshape(data.shape[0], -1) |
Replace all quotes in a string with escaped quotes? | print(s.encode('unicode-escape').replace('"', '\\"')) |
Partitioning a string in Python by a regular expression | re.split('(\\W+)', s) |
plotting stacked barplots on a panda data frame | df.plot(kind='barh', stacked=True) |
How to reverse a dictionary in Python? | {i[1]: i[0] for i in list(myDictionary.items())} |
finding index of multiple items in a list | [i for i, j in enumerate(myList) if 'how' in j.lower() or 'what' in j.lower()] |
find out if a Python object is a string | isinstance(obj, str) |
find out if a Python object is a string | isinstance(o, str) |
find out if a Python object is a string | (type(o) is str) |
find out if a Python object is a string | isinstance(o, str) |
find out if a Python object is a string | isinstance(obj_to_test, str) |
take the content of a list and append it to another list | list2.extend(list1) |
take the content of a list and append it to another list | list1.extend(mylog) |
take the content of a list and append it to another list | c.extend(a) |
take the content of a list and append it to another list | for line in mylog:
list1.append(line) |
Appending tuples to lists | b.append((a[0][0], a[0][2])) |
Where do I get a SECRET_KEY for Flask? | app.config['SECRET_KEY'] = 'Your_secret_string' |
How to unpack a Series of tuples in Pandas? | pd.DataFrame(out.tolist(), columns=['out-1', 'out-2'], index=out.index) |
How to find the position of an element in a list , in Python? | [x for x in range(len(stocks_list)) if stocks_list[x] == 'MSFT'] |
Is it possible to wrap the text of xticks in matplotlib in python? | ax.set_xticklabels(labels, rotation=45) |
How to remove symbols from a string with Python? | re.sub('[^\\w]', ' ', s) |
get current directory - Python | os.path.basename(os.path.dirname(os.path.realpath(__file__))) |
Regex and Octal Characters | print(re.findall("'\\\\[0-7]{1,3}'", str)) |
Python split string based on regex | re.split('[ ](?=[A-Z]+\\b)', input) |
Python split string based on regex | re.split('[ ](?=[A-Z])', input) |
Using Python Requests to send file and JSON in single request | r = requests.post(url, files=files, headers=headers, data=data) |
How to write bytes to a file in Python 3 without knowing the encoding? | open('filename', 'wb').write(bytes_) |
Mapping dictionary value to list | [dct[k] for k in lst] |
How to find duplicate names using pandas? | x.set_index('name').index.get_duplicates() |
Truncating floats in Python | round(1.923328437452, 3) |
Order list by date (String and datetime) | sorted(li, key=lambda x: datetime.strptime(x[1], '%d/%m/%Y'), reverse=True) |
Move radial tick labels on a polar plot in matplotlib | ax.set_rlabel_position(135) |
How to check if a path is absolute path or relative path in cross platform way with Python? | os.path.isabs(my_path) |
Counting the Number of keywords in a dictionary in python | len(list(yourdict.keys())) |
Counting the Number of keywords in a dictionary in python | len(set(open(yourdictfile).read().split())) |
Pandas dataframe get first row of each group | df.groupby('id').first() |
Splitting a list in a Pandas cell into multiple columns | pd.concat([df[0].apply(pd.Series), df[1]], axis=1) |
Extracting specific src attributes from script tags | re.findall('src="js/([^"]*\\bjquery\\b[^"]*)"', data) |
Most efficient way to convert items of a list to int and sum them up | sum(int(float(item)) for item in [_f for _f in ['', '3.4', '', '', '1.0'] if _f]) |
How to use subprocess when multiple arguments contain spaces? | subprocess.Popen(['c:\\Program Files\\VMware\\VMware Server\\vmware-cmd.bat']) |
how to reverse a priority queue in Python without using classes? | q.put((-n, n)) |
pandas plot dataframe barplot with colors by category | df['group'].plot(kind='bar', color=['r', 'g', 'b', 'r', 'g', 'b', 'r']) |
Python regex for MD5 hash | re.findall('([a-fA-F\\d]{32})', data) |
Getting the length of an array | len(my_list) |
Getting the length of an array | len(l) |
Getting the length of an array | len(s) |
Getting the length of an array | len(my_tuple) |
Getting the length of an array | len(my_string) |
remove escape character from string | """\\a""".decode('string_escape') |
Python string replace two things at once? | """obama""".replace('a', '%temp%').replace('b', 'a').replace('%temp%', 'b') |
How do I remove/delete a folder that is not empty with Python? | shutil.rmtree('/folder_name') |
in pandas how can I groupby weekday() for a datetime column? | data['weekday'] = data['my_dt'].apply(lambda x: x.weekday()) |
How to sort Counter by value? - python | sorted(x, key=x.get, reverse=True) |
How to sort Counter by value? - python | sorted(list(x.items()), key=lambda pair: pair[1], reverse=True) |
Append a NumPy array to a NumPy array | np.vstack((a, b)) |
numpy concatenate two arrays vertically | print(concatenate((a, b), axis=0)) |
numpy concatenate two arrays vertically | print(concatenate((a, b), axis=1)) |
numpy concatenate two arrays vertically | c = np.r_[(a[None, :], b[None, :])] |
numpy concatenate two arrays vertically | np.array((a, b)) |
How can I do DNS lookups in Python, including referring to /etc/hosts? | print(socket.getaddrinfo('google.com', 80)) |
How to update a subset of a MultiIndexed pandas DataFrame | df.xs('sat', level='day', drop_level=False) |
How do I return a 401 Unauthorized in Django? | return HttpResponse('Unauthorized', status=401) |
How to dynamically select template directory to be used in flask? | Flask(__name__, template_folder='wherever') |
How do I INSERT INTO t1 (SELECT * FROM t2) in SQLAlchemy? | session.execute('INSERT INTO t1 (SELECT * FROM t2)') |
Sorting a list of lists in Python | c2.sort(key=lambda row: row[2]) |
Sorting a list of lists in Python | c2.sort(key=lambda row: (row[2], row[1], row[0])) |
Sorting a list of lists in Python | c2.sort(key=lambda row: (row[2], row[1])) |
Non-ASCII characters in Matplotlib | matplotlib.rc('font', **{'sans-serif': 'Arial', 'family': 'sans-serif'}) |
Pandas datetime column to ordinal | df['date'].apply(lambda x: x.toordinal()) |
Get HTML Source of WebElement in Selenium WebDriver using Python | element.get_attribute('innerHTML') |
Most efficient way to get the integer index of a key in pandas | df.index.get_loc('bob') |
open a terminal from python | os.system('gnome-terminal -e \'bash -c "sudo apt-get update; exec bash"\'') |
Python - How to declare and add items to an array? | my_dict.update({'third_key': 1}) |
Python - How to declare and add items to an array? | my_list = [] |
Python - How to declare and add items to an array? | my_list.append(12) |
Add entry to list and remove first one in Python | myList.insert(0, 'wuggah') |
Converting a hex-string representation to actual bytes in Python | """\\xF3\\xBE\\x80\\x80""".replace('\\x', '').decode('hex') |
How to select the last column of dataframe | df[df.columns[-1]] |
How to get a value from a Pandas DataFrame and not the index and object type | df.loc[df['Letters'] == 'C', 'Letters'].values[0] |
Converting two lists into a matrix | np.column_stack(([1, 2, 3], [4, 5, 6])) |
determine the variable type | type(i) |
determine the variable type | type(v) |
determine the variable type | type(v) |
determine the variable type | type(v) |
determine the variable type | type(v) |
determine the variable type | print(type(variable_name)) |
Get the nth item of a generator in Python | next(itertools.islice(range(10), 5, 5 + 1)) |
printing double quotes around a variable | print('"{}"'.format(word)) |