diff --git a/_pytest/python_api.py b/_pytest/python_api.py
index fe36372d1..915c4fde2 100644
--- a/_pytest/python_api.py
+++ b/_pytest/python_api.py
@@ -1,5 +1,6 @@
 import math
 import sys
+
 import py
 
 from _pytest.compat import isclass, izip