map-int-version-parsing (RUF048)

This rule is unstable and in preview. The --preview flag is required for use.

What it does

Checks for calls of the form map(int, __version__.split(".")).

Why is this bad?

__version__ does not always contain integral-like elements.

import matplotlib  # `__version__ == "3.9.1.post-1"` in our environment

# ValueError: invalid literal for int() with base 10: 'post1'
tuple(map(int, matplotlib.__version__.split(".")))

See also Version specifiers | Packaging spec.

Example

tuple(map(int, matplotlib.__version__.split(".")))

Use instead:

import packaging.version as version

version.parse(matplotlib.__version__)