In the section here:
https://www.python.org/dev/peps/pep-0008/#descriptive-naming-styles
it says:
_single_leading_underscore: weak "internal use" indicator. E.g. from M import * does not import objects whose name starts with an underscore.
I would change it to:
_single_leading_underscore: weak "internal use" indicator. E.g. from M import * does not import objects whose names start with an underscore.