Why does ansible-test pylint consider "_" to be a "bad-name"?

[Rich Megginson]

Question about ansible-test sanity pylint -
https://github.com/ansible/ansible/blob/stable-2.9/test/lib/ansible_test/_data/sanity/pylint/config/ansible-test.cfg#L28
- why is _ considered a bad variable name?  It is the standard, or at
least de facto, way to ignore one of the return values from a function?

[Felix Fontein]

Hi,

according to the documentation:
https://docs.ansible.com/ansible/latest/dev_guide/testing/sanity/no-underscore-variable.html

Cheers,
Felix