所以我认为如果我展示一个例子就更容易解释:
things = ["black", 7, "red', 10, "white", 15]
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两个基于索引是偶数还是奇数的新列表.
color = ["black", "red","white"]
size = [7,10,15]
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In [4]: things = ["black", 7, "red", 10, "white", 15]
In [5]: color = things[::2]
In [6]: color
Out[6]: ['black', 'red', 'white']
In [7]: size = things[1::2]
In [8]: size
Out[8]: [7, 10, 15]
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