Python 如何删除不定前缀

regex个

import re

def remove_indefinite_part(input_string):
    # Define the regular expression pattern to match the first indefinite part
    pattern = r'^\/[a-zA-Z]+(@[a-zA-Z]+)?\s?'

    # Find the first match using the pattern
    match = re.search(pattern, input_string)

    if match:
        # Remove the matched part from the input string
        modified_string = input_string[len(match.group()):].strip()
    else:
        modified_string = input_string

    return modified_string

# Test the function with example inputs
inputs = [
    '/a (some optional text)',
    '/a@w (some optional text)',
    '/an (some optional text)',
    '/an@w (some optional text)',
    '/am (some optional text)',
    '/am@w (some optional text)',
    '/b (some optional text)',
    '/b@w (some optional text)',
    '/bn (some optional text)',
    '/bn@w (some optional text)',
    '/bm (some optional text)',
    '/bm@w (some optional text)'
]

for input_str in inputs:
    result = remove_indefinite_part(input_str)
    print(result)

输出:

(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)
(some optional text)