按第一个单词从文本文件中删除一行

def delete_line_by_first_word(file_path, target_word):
    # 读取文本文件
    with open(file_path, 'r') as file:
        lines = file.readlines()

    # 逐行检查并删除匹配行
    modified_lines = []
    for line in lines:
        words = line.split()
        if len(words) > 0 and words[0] != target_word:
            modified_lines.append(line)

    # 保存修改
    with open(file_path, 'w') as file:
        file.writelines(modified_lines)

# 示例用法
delete_line_by_first_word('example.txt', 'apple')