从文件中删除与模式匹配的行之间的行

import re

def delete_lines_between_patterns(filename, start_pattern, end_pattern):
    # 读取文件内容
    with open(filename, 'r') as file:
        lines = file.readlines()

    # 标记是否需要删除行
    delete_mode = False
    result = []

    # 遍历每一行
    for line in lines:
        # 检查是否匹配起始模式
        if re.search(start_pattern, line):
            delete_mode = True
            continue

        # 检查是否匹配结束模式
        if re.search(end_pattern, line):
            delete_mode = False
            continue

        # 如果不需要删除行，则添加到结果中
        if not delete_mode:
            result.append(line)

    # 将结果写回文件
    with open(filename, 'w') as file:
        file.writelines(result)

# 示例调用
delete_lines_between_patterns('input.txt', 'start_pattern', 'end_pattern')