Third-party after local import should be forbidden but isn't

[hydrargyrum]

When putting a third-party import after local import, pep8 style should reject it, but it doesn't:

% cat test.py
import os

import third

from .local import something

import party
% flake8 test.py --select=I2 --import-order-style=pep8 && echo no problem
no problem