On Wed, Jul 27, 2016 at 11:05 AM, Jack Wilsdon <jack.wilsdon@gmail.com> wrote:

Hi,

I'm looking for a way to import __version__ / __author__ into my __init__.py without causing an F401 error.

Defining __version__ normally works fine:

...

init.py

__version__ = '1.0.0' __author__ = 'Jack Wilsdon <jack.wilsdon@gmail.com>

But if I define them in an external file and import them, I get an F401 error:

...

__version__.py

__version__ = '1.0.0' __author__ = 'Jack Wilsdon <jack.wilsdon@gmail.com>

...

init.py

from __version__ import __version__, __author__ # I get an F

...

flake8 __init__.py

__init__.py:1:1: F401 '__version.__author__' imported but unused __init__.py:1:1: F401 '__version.__version__' imported but unused

Is there anything I can do about this? I know I could add "# noqa: F401" to the end of the import, but it just feels like a bit of a "hack" to me.

I could also add __version__ and __author__ to __all__ in init.py, but then they would be imported if anyone used "from my_module import *", which is definitely not what I want.

Is this a bug in flake8/pyflakes or just my understanding of how __version__ and __author__ are exempt from F401 errors normally.

I wouldn't consider it a bug in either. There might be a case for special-casing some dunder variables but it's not really a bug. I'm not sure why you think __version__ and __author__ are exempt from F401 errors normally. F401 means they were imported without being used. If you mean, why don't I see F401 when I define them in __init__.py to start with, then that's because like all module globals, pyflakes does not check to see if it's used later because module constants may not need to be used.