Think about direct magic method invocation

[sobolevn]

Rule request

Thesis

Some users say that d.__delitem__('a') should not be used. And it is perfectly reasonable, since both del and __delitem__ magic method are restricted.

But, this maid me think about general case: should we allow to call magic methods directly?

Reasoning

We already disallow to use protected attributes and methods. This might be similar.
But, we need to think about all possible cases like .__dict__, .__mro__, etc.

So, there are two way to go:

1. Forbid to use all forbidden magic method calls from the instance: d.__delitem__('a')
2. Forbid to use any magic methods directly (need deeper investigation)

[sobolevn]

From my research I have not found any valid magic attributes in all my source code.
Even if there are any direct magic method invocations - then it should be marked as noqa.

[sobolevn]

Hm, nope. There's a whitelist: __class__, __name__, __qualname__, __doc__.
Link: https://docs.python.org/3/reference/datamodel.html

[sobolevn]

Just a better listing: https://rszalski.github.io/magicmethods/