Block install on Python < 3.5.2 #2321
Merged
+29
−32
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This is designed to prevent problems like #2318 - in #2315 I tried to to add a CI job for Python 3.5.1, but it turns out that
tox
doesn't support patch versions... and so I thought the best option was to explicitly drop 3.5.0 and 3.5.1 and get ahead of the cleanups.We're not the only project to be thinking about this: e.g. there's pytest-dev/pytest#6470, python-trio/trio#880, and python/mypy#7420. Ubuntu has shipped Python >= 3.5.2 since their 16.04.05, and PyPI stats show low 3.5 usage (much lower than 2.7), of which we think only a small portion will be affected.