python从列表中选择特定元素 [英] python select specific elements from a list

问题描述

是否有一种"pythonic"方式，仅从列表中获取某些值，类似于以下perl代码:

Is there a "pythonic" way of getting only certain values from a list, similar to this perl code:

my ($one,$four,$ten) = line.split(/,/)[1,4,10]

推荐答案

我认为您正在寻找operator.itemgetter:

import operator
line=','.join(map(str,range(11)))
print(line)
# 0,1,2,3,4,5,6,7,8,9,10
alist=line.split(',')
print(alist)
# ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
one,four,ten=operator.itemgetter(1,4,10)(alist)
print(one,four,ten)
# ('1', '4', '10')

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