>>> s=[1,2,3] >>> s.append(5) >>> s [1, 2, 3, 5] >>> s=s.append(5) >>> s >>> print s None
why can't s=s.append(5) ,what is the reason?
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>>> s=[1,2,3] >>> s.append(5) >>> s [1, 2, 3, 5] >>> s=s.append(5) >>> s >>> print s None
why can't s=s.append(5) ,what is the reason?
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