Python - 包含字符串和整数的拆分列表 [英] Python - Splitting List That Contains Strings and Integers

问题描述

myList = [ 4,'a', 'b', 'c', 1 'd', 3]

如何将此列表拆分为两个列表，其中一个包含字符串，另一个包含 elegant / pythonic 方式的整数？

how to split this list into two list that one contains strings and other contains integers in elegant/pythonic way?

输出：

myStrList = [ 'a', 'b', 'c', 'd' ]

myIntList = [ 4, 1, 3 ]

注意：没有实现这样的列表，只考虑如何找到这样一个问题的优雅答案（有没有？）。

NOTE: didn't implemented such a list, just thought about how to find an elegant answer (is there any?) to such a problem.

推荐答案

正如其他人在评论中所提到的那样，你应该真正开始考虑如何摆脱持有的列表 - 首先是同质数据。但是，如果真的不能，我会使用defaultdict：

As others have mentioned in the comments, you should really start thinking about how you can get rid of the list which holds in-homogeneous data in the first place. However, if that really can't be done, I'd use a defaultdict:

from collections import defaultdict
d = defaultdict(list)
for x in myList:
   d[type(x)].append(x)

print d[int]
print d[str]

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