OK, changed my mind once more on this. The comparison hierarchy is

now

    None < all numeric types < all other types

so that once again

    map(max, Squares(3), Squares(2))

equals

    [0, 1, 4]

Lib/test/test_b1.py

@@ -483,7 +483,7 @@ if map(int, Squares(10)) != [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]:
     raise TestFailed, 'map(int, Squares(10))'
 if map(None, Squares(3), Squares(2)) != [(0,0), (1,1), (4,None)]:
     raise TestFailed, 'map(None, Squares(3), Squares(2))'
-if map(max, Squares(3), Squares(2)) != [0, 1, None]:
+if map(max, Squares(3), Squares(2)) != [0, 1, 4]:
     raise TestFailed, 'map(max, Squares(3), Squares(2))'
 
 print 'max'