>>> alist=[1,2,3]
>>>alist
[1, 2, 3]
>>> alist*3
[1, 2, 3, 1, 2, 3, 1, 2, 3]
>>> [alist]
[[1, 2, 3]]
>>> [alist]*3
[[1, 2, 3], [1, 2, 3], [1, 2, 3]]
列表-alist=[1,2,3]，alist*3与[alist]*3
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转载自blog.csdn.net/bb_soma/article/details/105572672
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