直接贴上代码

import os
import re

def add_host_record(host_name, ip_address):
    """
    新增windows系统的host记录
    """
    host_file = r"C:\Windows\System32\drivers\etc\hosts"

    if not os.path.exists(host_file):
        print(f"文件不存在: {host_file}")
        return

    with open(host_file, "r", encoding="utf-8") as file:
        content = file.read()

    if re.search(r"^127.0.0.1\s+.*$", host_name, re.MULTILINE):
        print(f"主机记录已存在: {host_name}")
        return

    with open(host_file, "a", encoding="utf-8") as file:
        file.write(f"{ip_address} {host_name}\n")

if __name__ == "__main__":
    add_host_record("res.wx.qq.com", "43.141.9.134")
    print("主机记录已添加")