如何删除列表中字符串中的所有空格

Question

我的清单是这样的,

mylist=[ " ","abc","bgt","llko","    ","hhyt","  ","      ","iuyt"]

如何删除此列表中包含字符串的所有空格？

Answer 1

你可以使用列表理解:

 new_list = [elem for elem in mylist if elem.strip()]

使用strip()保证即使只包含多个空格的字符串也将被删除.

Answer 2

filter与未绑定方法 一起使用str.strip.

Python 2.x

>>> mylist=[ " ","abc","bgt","llko"," ","hhyt"," "," ","iuyt"]
>>> filter(str.strip, mylist)
['abc', 'bgt', 'llko', 'hhyt', 'iuyt']

Python 3.x

>>> mylist=[ " ","abc","bgt","llko"," ","hhyt"," "," ","iuyt"]
>>> list(filter(str.strip, mylist))
['abc', 'bgt', 'llko', 'hhyt', 'iuyt']

Answer 3

只需使用过滤器即可None。

filter(None, mylist)

如果空字符串是指仅包含空白字符的字符串，那么您应该使用：

filter(str.strip, mylist)

例子：

>>> filter(None, ['', 'abc', 'bgt', 'llko', '', 'hhyt', '', '', 'iuyt'])
['abc', 'bgt', 'llko', 'hhyt', 'iuyt']
>>> filter(str.strip, [' ', 'abc', 'bgt', 'llko', ' ', 'hhyt', ' ', ' ', 'iuyt'])
['abc', 'bgt', 'llko', 'hhyt', 'iuyt']