--- a
+++ b/.flake8
@@ -0,0 +1,9 @@
+# This is an example .flake8 config, used when developing *Black* itself.
+# Keep in sync with setup.cfg and pyproject.toml which is used for source packages.
+
+[flake8]
+ignore = W503, E203, B950, B011, B904
+max-line-length = 100
+max-complexity = 18
+select = B,C,E,F,W,T4,B9
+docstring-convention = google