diff --git a/Lib/turtle.py b/Lib/turtle.py
index 8909fe9..9db564b 100644
--- a/Lib/turtle.py
+++ b/Lib/turtle.py
@@ -3839,7 +3839,7 @@
         docsdict[key] = eval(key).__doc__
 
     with open("%s.py" % filename,"w") as f:
-        keys = sorted(x for x in docsdict.keys()
+        keys = sorted(x for x in docsdict
                       if x.split('.')[1] not in _alias_list)
         f.write('docsdict = {\n\n')
         for key in keys[:-1]: