/usr/lib/python2.6/dist-packages/ is in python-pytest 2.2.4-2.
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/usr/lib/python2.6/dist-packages/_pytest/
/usr/lib/python2.6/dist-packages/_pytest/__init__.py
/usr/lib/python2.6/dist-packages/_pytest/assertion/
/usr/lib/python2.6/dist-packages/_pytest/assertion/__init__.py
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