format

builtins

function

format(value, format_spec='', /)

Return type(value).__format__(value, format_spec)

Many built-in types implement format_spec according to the
Format Specification Mini-language. See help('FORMATTING').

If type(value) does not supply a method named __format__
and format_spec is empty, then str(value) is returned.
See also help('SPECIALMETHODS').

© Python Software Foundation. PSF License Version 2 · Official docs ↗

Changed in 3.4

3.4: object().__format__(format_spec) raises TypeError if format_spec is not an empty string.