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Tools like pep8 can check source code style, but they don't check if docstrings are fromatted according to pep257, pep287. Are there such tools?
Update
I decided to implement such a static analysis tool on my own, see:
https://github.com/GreenSteam/pep257
Right now, most of pep257 is covered. Design was heavily influenced by mentioned pep8 tool.