抓取列表的特定索引 [英] Grabbing specific indices of a list

问题描述

有没有办法像我在NumPy中所做的那样获取列表的特定索引?

Is there a way to grab specific indices of a list, much like what I can do in NumPy?

sample = ['a','b','c','d','e','f']
print sample[0,3,5]
>>>['a','d','f']

我已经尝试使用Google搜索，但是找不到找到相关结果的好措辞...

I've tried Googling this, but I couldn't find a good way to word my issue that resulted in relevant results...

推荐答案

您可以使用列表理解:

>>> sample = ['a','b','c','d','e','f']
>>> [sample[i] for i in (0, 3, 5)]
['a', 'd', 'f']

或者，我很快做出了一些事情:

Or, something I quickly made:

>>> class MyList(list):
...     def __getitem__(self, *args):
...             return [list.__getitem__(self, i) for i in args[0]]
... 
>>> mine = MyList(['a','b','c','d','e','f'])
>>> print mine[0, 3, 5]
['a', 'd', 'f']

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