从文本文件中提取特定开始/结束模式之间的行

import re

def extract_lines(filename, start_pattern, end_pattern):
    lines = []
    with open(filename, 'r') as file:
        is_extracting = False
        for line in file:
            if re.search(start_pattern, line):
                is_extracting = True
            elif re.search(end_pattern, line):
                is_extracting = False
            if is_extracting:
                lines.append(line.strip())
    return lines

# 示例用法
filename = 'example.txt'
start_pattern = r'START'
end_pattern = r'END'
extracted_lines = extract_lines(filename, start_pattern, end_pattern)
for line in extracted_lines:
    print(line)