Gets a string value from the user.

Asks the user for a value and makes sure that it’s an integer.

Checks for “yes” or “no” against 8 languages, plus plain old “y” and “n”.

Asks the user for a filename, then verifies that it exists.

Asks the user for a folder name, then verifies that it exists.

Gets a string from the user and verifies it against a regular expression. It can be supplied a custom invalidation message so the user doesn’t see “Must match the regular expression: “ followed by a bunch of apparently random characters and stop using your program out of frustration.

If the COLUMNS environment variable is set, this will take it. If not, it assumes 80.

Prints the keys and values in a dictionary, with incredibly flexible formatting options.

Prints the items in a list, with the same formatting options as print_dict.

A powerful word-wrapping function that will wrap words to a certain number of columns.

A thick wrapper around wrap_str that provides alignment and fill options.

Writes a line of text and underlines it.

The famous implementation from PEP 257, this will strip leading whitespace from a docstring.