如何自动浏览和编辑长txt文件？

# 打开txt文件
file_path = "path/to/your/file.txt"
with open(file_path, "r") as file:
    lines = file.readlines()

# 浏览文件内容
for line in lines:
    print(line)

# 编辑文件内容
edited_lines = []
for line in lines:
    # 示例：将"old"替换为"new"
    edited_line = line.replace("old", "new")
    edited_lines.append(edited_line)

# 保存修改后的内容到原文件
with open(file_path, "w") as file:
    file.writelines(edited_lines)