Python How-To Questions

choose the best string formatting: % vs. .format vs. f-string literal.

'.format' string formatting f-string '%'

Flush the output of the print function.

python print output flush

Prettyprint a JSON file.

python prettyprint json file

Create a dictionary with list comprehension.

python dictionary list comprehension

Select multiple columns in a Pandas dataframe.

python pandas column select multiple

Profile a script.

python profile script

Reverse a string.

python string reverse

Convert two lists into a dictionary.

python convert list-to-dictonary

Convert an integer into a string.

python convert integer-to-string

generate random strings with upper case letters and digits.

python random string-uppercase generate

Extract extension from filename.

python filenames file-extension

Print to stderr in Python.

python stderr printing zen-of-python

Generate random integers between 0 and 9.

python random integer

Use a pythonic way to create a long multi-line string.

python string multilinestring multiline

Measure elapsed time in Python.

python time measure

Install specific package versions with pip.

python pip package version install

Read from stdin (standard input).

python stdin read

Install pip on macOS or OS X.

macos install pip os x

Get the class name of an instance.

python class name instance

Delete a column from a Pandas DataFrame.

pandas dataframe column delete

Check if a string is empty.

python string check empty

Pad zeroes to a string.

python string pad zeros

Delete an element from a dictionary.

python dictionary delete element

Check if a string is a float.

python check type float

Count the occurrences of an item in a list.

python list count

Remove an element from a list by index.

python list indexing

Use static methods.

python static-methods

Remove a trailing newline.

python newline trailing

Print literal curly-brace characters in a string and also use .format on it.

python string format curly-braces string-formatting

Exit/deactivate a virtualenv.

python exit virtualenv

Become a Patron

Do you like my work and would want to contribute? You can become a patron on my Patreon below!

Become a Patron