Python 字符串按模式拆分而不删除定界符

Question

我有一个很长的字符串，每当出现某种模式时，我想将它分成更小的 stinger:(在下面的例子中是 123 my)

my_str = '123 my string is long 123 my string is very long 123 my string is so long'

我想要的结果是:

result = ['123 my string is long ', '123 my string is very long ', '123 my string is so long ']

字符串长度未知。而且我不想从主字符串中删除任何内容。

Answer 1

您还可以使用前瞻性正则表达式:

import re
re.split(r'.(?=123 my)', my_str)
=>
['123 my string is long',
 '123 my string is very long',
 '123 my string is so long']