pep257 moved to https://github.com/PyCQA and changed its name to "pydocstyle" to separate name from purpose (this is a very good idea). I've already filed a RFP for this [1].
pep257 users are advised to switch over to that as soon as it's available, and it should be build/run on Python 3 from the start up. Thanks, DS [1] http://bugs.debian.org/cgi-bin/816496 (RFP: pydocstyle -- Python code style checker) -- 4096R/DF5182C8 http://www.danielstender.com/blog/