Lint core.py
Lint core.py

Summary: See title.

Reviewed By: int3

Differential Revision: D17966686

fbshipit-source-id: 2ffd1d8509eee5caf2059e2a7a4e1677c3261826

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex