Python 如何概括这个正则表达式，以便它开始在字符串的开头捕获子字符串，或者如果它后面跟着其他单词

您可以使用

import re

name = "John"

input_sense_auxs = [
    "These sound system are too many, I think John can help us, otherwise it will be waiting for a while longer",
    "These sound system are too many but I know that John can help us, otherwise it will be waiting for a while longer",
    "These sound system are too many but I know that John can help us. otherwise it will be waiting for a while longer",
    "Do you know if John with the others could come this afternoon?",

    "John can help us, otherwise it will be waiting for a while longer",
    "Can you help us, otherwise it will be waiting for a while longer for John",
    "sorry! can you help us? otherwise it will be waiting for a while longer for John"]

regex_patron_m1 = fr'(?:^|[?!¿¡,;:([.])\s*(?:(\w+(?:\s+\w+)*)\s*)?{name}(?:\s*(\w+(?:\s+\w+)*))?\s*(?:$|[]?!,;:).])'
# r"\s*((?:\w\s*)+)\s*?" + name + r"\s*((?:\w\s*)+)\s*\??"
for input_sense_aux in input_sense_auxs:
    print(f'--- {input_sense_aux} ---')
    m1 = re.search(regex_patron_m1, input_sense_aux, re.IGNORECASE) #Con esto valido la regex haber si entra o no en el bloque de code
    if m1:
        something_1, something_2 = m1.groups()

        something_1 = something_1.strip() if something_1 else ""
        something_2 = something_2.strip() if something_2 else ""

        print(repr(something_1))
        print(repr(something_2))

输出:

--- These sound system are too many, I think John can help us, otherwise it will be waiting for a while longer ---
'I think'
'can help us'
--- These sound system are too many but I know that John can help us, otherwise it will be waiting for a while longer ---
'These sound system are too many but I know that'
'can help us'
--- These sound system are too many but I know that John can help us. otherwise it will be waiting for a while longer ---
'These sound system are too many but I know that'
'can help us'
--- Do you know if John with the others could come this afternoon? ---
'Do you know if'
'with the others could come this afternoon'
--- John can help us, otherwise it will be waiting for a while longer ---
''
'can help us'
--- Can you help us, otherwise it will be waiting for a while longer for John ---
'otherwise it will be waiting for a while longer for'
''
--- sorry! can you help us? otherwise it will be waiting for a while longer for John ---
'otherwise it will be waiting for a while longer for'
''

请看Python demo.

Details:

• (?:^|[?!¿¡,;:([.])\s*(?:(\w+(?:\s+\w+)*)\s*)? - the prefix, the left-hand side part, that matches
  • (?:^|[?!¿¡,;:([.])-从?!¿¡,;:([.集合开始的字符串或字符
  • \s*-零个或更多空格
  • (?:(\w+(?:\s+\w+)*)\s*)? - an optional occurrence of
    • (\w+(?:\s+\w+)*)-组1:一个或多个单词字符，然后是一个或多个空格和一个或多个单词字符的零个或多个序列
    • \s*-零个或更多空格
• John--名字
• (?:\s*(\w+(?:\s+\w+)*))?\s*(?:$|[]?!,;:).]) - the right-hand part:
  • \s*-零个或更多空格
  • (\w+(?:\s+\w+)*))?-组2:一个或多个单词字符的可选序列，然后零个或多个出现一个或多个空格，后跟一个或多个单词字符
  • \s*-零个或更多空格
  • (?:$|[]?!,;:).])-字符串结尾或]?!,;:).个字符集中的字符.

请看regex demo.