The Google Style Guide for python states that one should: "Use imports for packages and modules only."
https://google.github.io/styleguide/pyguide.html#Imports
Is there a tool that flags violations of this suggestion?
Pylint does NOT do it. For example, following: Is there a tool to lint Python based on the Google style guide?
Creating a test.py the violates the guideline (exists is a function, not a module):
"""Test file for pylint"""
from os.path import exists
exists('/home')
Then, running pylint with the rc file does just fine:
$ pylint --rcfile=googlecl-pylint.rc -r n -s n test.py
$ echo $?
0
Searching through the possible codes: http://pylint-messages.wikidot.com/all-codes, I don't see anything that looks like it would warn against this.
I have also not seen anything in pep8 or pyflakes that will catch this.