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Black is excellent ideed, and solves the problem of having code compatible with PEP8 once and for all.

flake8 is a linter that doesn't need much config, and you can config it to give you only "serious" errors and not stylistic issues.

I gave a talk on these subjects last year at the Paris Open Source Summit: https://speakerdeck.com/sfermigier/python-quality-engineerin... (NB: Black didn't exist yet at the time).

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flake8, like black, shouldn't really require any config on most projects yet annoyingly it always requires at least a little. I really would switch to another tool in a heartbeat if they could just fix that.

Ideally instead of needing to be told whether to only show "serious" errors, for instance, it should just give you a project "score" (sum of the errors x their severity) and show the top 20 or so errors in order of importance and by default it should never exit with error code 1 with just stylistic errors unless explicitly configured to do so.

Have you tried pyflakes?

No, and I think you just made my day. Thanks!

Or rather, I'd vaguely heard the name but I erroneously thought it was just another flake8 type thing.

pyllama is another project in the same space which I like. It uses pyflakes under the hood.

https://github.com/klen/pylama

Black? Why the undifferentiated name? Another OSS naming fail.

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