问题描述
myList = [ 4,'a', 'b', 'c', 1 'd', 3]
如何将这个列表分成两个列表,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,只是考虑如何为这样的问题找到一个优雅的答案(有吗?).
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提到的那样,您应该真正开始考虑如何摆脱包含非同质数据的列表.但是,如果这真的 不能 完成,我会使用默认字典:
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]