Replace all map(None, a) with list(a).
diff --git a/Lib/test/test_grp.py b/Lib/test/test_grp.py
index a8dcb63..564c7f0 100755
--- a/Lib/test/test_grp.py
+++ b/Lib/test/test_grp.py
@@ -57,7 +57,7 @@
         namei = 0
         fakename = allnames[namei]
         while fakename in bynames:
-            chars = map(None, fakename)
+            chars = list(fakename)
             for i in xrange(len(chars)):
                 if chars[i] == 'z':
                     chars[i] = 'A'
@@ -74,7 +74,7 @@
                 except IndexError:
                     # should never happen... if so, just forget it
                     break
-            fakename = ''.join(map(None, chars))
+            fakename = ''.join(chars)
 
         self.assertRaises(KeyError, grp.getgrnam, fakename)