$ flake8 --help Traceback (most recent call last): File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 570, in _build_master ws.require(__requires__) File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 888, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 779, in resolve raise VersionConflict(dist, req).with_context(dependent_req) pkg_resources.ContextualVersionConflict: (pycodestyle 2.4.0 (/usr/lib/python3.6/site-packages), Requirement.parse('pycodestyle<2.4.0,>=2.0.0'), {'flake8'}) [...]
*** This bug has been marked as a duplicate of bug 1582075 ***