looks like the use case is to match python interpr...
# developmentf
full-kilobyte-93429
03/07/2016, 11:10 PMlooks like the use case is to match python interpreter, not platforms
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PythonRequirement('unittest2', version_filter=lambda py, pl: py.startswith('2')),
PythonRequirement('unittest2py3k', version_filter=lambda py, pl: py.startswith('3'))