Replace all map(None, a) with list(a).
diff --git a/Lib/stringold.py b/Lib/stringold.py
index 7cbd7aa..ebfe383 100644
--- a/Lib/stringold.py
+++ b/Lib/stringold.py
@@ -391,7 +391,7 @@
         raise ValueError, "maketrans arguments must have same length"
     global _idmapL
     if not _idmapL:
-        _idmapL = map(None, _idmap)
+        _idmapL = list(_idmap)
     L = _idmapL[:]
     fromstr = map(ord, fromstr)
     for i in range(len(fromstr)):