Extend C41x to detect for _ in list(dict.values())

[Lattay]

Hello, I inherited a code with a lot of pattern like this:

for val in list(some_dict.values()):
    do_something(val)

As well as the list comprehension counterpart. As this plugin helped me a lot to catch a lot of other list comprehension and list/set/dict abuse, I wondered if such a pattern could be added to C411 (or another code).

[adamchainz]

Hi,

Yes, we could do this. I think it would want another code.

I don't have time to look into this right now, but if you make a PR I'll review. To start, check out the ast module in Python's standard library and try parsing some examples to see what the parsed tree looks like for this pattern.

Thanks,

Adam

[Lattay]

Thank you, I never done flake8 plug-ins before butI'll look into it.