python替换字符串忽略换行

Question

For example ,

str="dddabc
d
e
xxxx
123
345"

,want to replace "abcde" with null . New str need to be

"ddd
xxxx
123
345"

What is the easy way to do it ?

If I drop the new line , the new string will be dddxxxx123345 , and that wrong

This need to be on linux so it \\r\\n maybe

Answer 1

Use regex re.sub

Return the string obtained by replacing the leftmost non-overlapping occurrences of pattern in string by the replacement repl. If the pattern isn't found, string is returned unchanged. repl can be a string or a function; if it is a string, any backslash escapes in it are processed.

import re
st="""dddabc
d
e
xxxx
123
345
"""
rep="abcde"
print(re.sub(r'\n?'.join(rep),r'',st))

OUTPUT

ddd
xxxx
123
345

Answer 2

按以下方式使用正则表达式：

new_str = re.sub('a(\s)*b(\s)*c(\s)*d(\s)*e(\s)*', "", str)