[yt-dev] Issue #877: Setup script should detect python version and hard fail for unsupported versions (yt_analysis/yt)

[Nathan Goldbaum]

New issue 877: Setup script should detect python version and hard fail for unsupported versions
https://bitbucket.org/yt_analysis/yt/issue/877/setup-script-should-detect-python-version

Nathan Goldbaum:

The yt setup script should parse [sys.version_info](https://docs.python.org/2/library/sys.html#sys.version_info) and hard-fail if someone tries to build yt with an unsupported python version.  It turns out yt successfully builds on python 2.6 but is subtly broken.  This could lead someone to try to use yt on 2.6 and not realize that we only support 2.7.