diff --git a/setup.py b/setup.py
index 06f12e01a..78dac4d0f 100755
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 
 import os
+import sys
+
 os.chdir('bindings/python')
-execfile('setup.py')
+with open('setup.py) as filename:
+    exec(filename.read())