批处理/查找和编辑TXT文件中的行

# 示例代码：查找和编辑TXT文件中的行

def find_and_edit_line(file_path, search_pattern, new_line):
    """
    查找并编辑TXT文件中的行

    :param file_path: 文件路径
    :param search_pattern: 查找模式（正则表达式）
    :param new_line: 新的行内容
    """
    import re

    # 读取文件内容
    with open(file_path, 'r', encoding='utf-8') as file:
        lines = file.readlines()

    # 查找并编辑行
    pattern = re.compile(search_pattern)
    edited = False
    for i, line in enumerate(lines):
        if pattern.search(line):
            lines[i] = new_line + '\n'
            edited = True
            break

    # 写回文件
    if edited:
        with open(file_path, 'w', encoding='utf-8') as file:
            file.writelines(lines)
        print(f"已编辑文件：{file_path}")
    else:
        print(f"未找到匹配的行：{search_pattern}")

# 示例用法
file_path = 'example.txt'
search_pattern = r'old_text'
new_line = 'new_text'
find_and_edit_line(file_path, search_pattern, new_line)