Tip on the "Late Binding Closures" section

The two solutions in "What You Should Do Instead" are certainly correct, while there's another solution in that special case, one can simply change

return [lambda x : i * x for i in range(5)]

to

return (lambda x : i * x for i in range(5))

in other words, one can create a generator, rather than a list, to postpone the time when cell contents be evaluated. Actually, a more essential test code could be

for multiplier in create_multipliers():
    print multiplier.__closure__[0].cell_contents

FYI.

Leia a seção "Late Binding Closures", especialmente "What You Should Do Instead", e compare o exemplo de generator proposto com as explicações existentes. Execute o loop create_multipliers() fornecido para verificar o comportamento do closure. Considera-se concluído quando a documentação apresenta corretamente qualquer alternativa válida e inclui um exemplo claro de apoio.