flake8 2.4.0 not support pep8 1.6.2 version?

Question

Recently I have updated flake8 from 2.3.0 to 2.4.0 by pip, and pep8 up to 1.6.2, now I can't run flake8 due to 2.4.0 not support >1.6 pep8.

Is there any way to downgrade pep8 to a previous version by pip? Bug Put upper cap on dependencies. The caps for 2.4.0 are:

pep8 < 1.6 (Related to GitLab#35)
mccabe < 0.4
pyflakes < 0.9

Answer 1

The last pep8 release before 1.6 was 1.5.7 (see the full list of releases); install that with pip by using a pin:

pip install --force pep8==1.5.7

You'll see something like:

$ pip install --force pep8==1.5.7
Collecting pep8==1.5.7
  Downloading pep8-1.5.7-py2.py3-none-any.whl
Installing collected packages: pep8
  Found existing installation: pep8 1.6.2
    Uninstalling pep8-1.6.2:
      Successfully uninstalled pep8-1.6.2

Successfully installed pep8-1.5.7

Alternatively, let pip figure out the last version before 1.6 for you:

pip install --force "pep8<1.6"

Also see issue 35 in the flake8 repository; the alternative is to downgrade flake8:

pip install --force flake8==2.3.0

A fix for pep8 is under way, hopefully soon we can find a way out of the current quagmire.