Support the banned-import-alias

[stancld]

🚀 Feature request

Currently, ruff supports enforcing importing packages/modules under aliases. It would be, however, nice to have a feature to forbid some aliases which might be considered non-standard at some companies.

For example, with a hypothetical configuration

[tool.ruff.flake8-import-conventions.forbidden-aliases]
"tensorflow.keras.backend" = "K"

the following import

>>> import tensorflow.keras.backend as K

should raise an error.

Thanks a lot for all your hard work. Ruff is an amazing tool ❤️

[charliermarsh]

Ooh, I almost replied saying we support this via aliases, but you're talking about the inverse: ban certain aliases. That makes sense to me! (And thank you for the kind words :))