Ignore flake8 F401 on specific files

Uses the flake8 option per-file-ignores that was introduced in a recent
version of flake8 (3.7.+) to avoid having lots of "noqa" in import
only files

Change-Id: Ib4871d63bad7e578165615df139cbf6093479201

1 files changed, 6 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index cdd9894d6..1e11063f3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -101,6 +101,12 @@ ignore =
 exclude = .venv,.git,.tox,dist,doc,*egg,build
 import-order-style = google
 application-import-names = sqlalchemy,test
+per-file-ignores =
+                **/__init__.py:F401
+                lib/sqlalchemy/events.py:F401
+                lib/sqlalchemy/schema.py:F401
+                lib/sqlalchemy/types.py:F401
+                lib/sqlalchemy/sql/expression.py:F401
 
 [sqla_testing]
 requirement_cls = test.requirements:DefaultRequirements