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is there a way to prevent or alert in case a member is imported from within a module?

Let's say I have the following structure:

my_module/
  __init__.py
  utilities.py

and __init__.py contains

from .utilities import SomeUtilityFunction

Is there a way to prevent or alert developers when they do

from my_module.utilities import SomeUtilityFunction

instead of

from my_module import SomeUtilityFunction

The problem arose when a few modules started using a function that was imported inside a module in which it wasn't used, while also being available on the module's __init__.py, so after linting the file and removing the unused import my tests started failing.

any other advice for situations like this?

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  • @fixmycode mypy type checking can report this error in your code:

    iox3.py:3: error: Module "iox2" does not explicitly export attribute "y" [attr-defined]

    which I think is roughly the problem you are encountering: an attribute in an imported module that wasn't explicitly defined in that module, but instead came from somewhere else.

    • I think this is the more sensitive approach, I'll take a look at putting mypy in my pipeline

13 comments