'No parent module' error

[dodomorandi]

I am having a strange issue with a false positive error.

I have a typical Python3 project with setup.py and the package directory, with all modules inside and, obviously, the __init__.py file.
Whenever I try to import a sibling module, in the form of from . import module, I got the error No parent module -- cannot perform relative import. If things are imported from the module in the form of from .module import func, everything is fine.
From the logs I can see that the error is obtained by pycodestyle. However, I tried to run the tool from the shell, and the error is not shown.

I am using NeoVim with LanguageClient-neovim, if it could be relevant.

[allan-simon]

I got this error too.

[languitar]

I suspect the internal call to pycodestyle strips away the remaining project context and thus this error appears.

[bbc2]

I think it's caused by the pyls-mypy plugin. See the issue I reported there: tomv564/pyls-mypy#36.