Simpler file type detection

extras/pre-commit

@@ -99,7 +99,9 @@ def GetFileType(filepath):
   except Exception, e:
     FailMsg("Failed to run 'file %s': '%s'" % (filepath, str(e)), 11)
   fo = fo.strip()
-  if fo == "%s: a python script text executable" % filepath:
+  if fo.endswith('.py'):
+    return "python"
+  elif fo == "%s: a python script text executable" % filepath:
     return "python"
   elif fo == "%s: a ost script text executable" % filepath:
     return "python"