Tim Graham cba51003de [2.0.x] Refs #28814 -- Fixed migrations crash with namespace packages on Python 3.7.
Due to https://bugs.python.org/issue32303.

Backport of 0f0a07ac278dc2be6da81e519188f77e2a2a00cf from master
2018-06-28 10:05:46 -04:00
..