diff --git a/pipenv/utils.py b/pipenv/utils.py
index 0ba41eb5..725a7ffd 100644
--- a/pipenv/utils.py
+++ b/pipenv/utils.py
@@ -28,7 +28,7 @@ def python_version(path_to_python):
 
     try:
         TEMPLATE = 'Python {}.{}.{}'
-        c = delegator.run([path_to_python,'--version'], block=False)
+        c = delegator.run([path_to_python, '--version'], block=False)
         assert c.return_code == 0
     except Exception:
         return None