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.

閱讀「Late Binding Closures」章節，尤其是「What You Should Do Instead」，並將提議的產生器範例與現有說明進行比較。執行提供的 create_multipliers() 迴圈，以驗證閉包行為。完成的標準是文件準確呈現任何有效的替代方案，並包含一個清楚的支援範例。