无法解析dns服务器wifi也不能用

import socket

def set_dns_servers(dns_servers):
    try:
        with open('/etc/resolv.conf', 'w') as f:
            for dns in dns_servers:
                f.write(f'nameserver {dns}\n')
        print("DNS servers set successfully.")
    except Exception as e:
        print(f"Failed to set DNS servers: {e}")

def get_current_dns_servers():
    try:
        with open('/etc/resolv.conf', 'r') as f:
            dns_servers = [line.split()[1] for line in f if line.startswith('nameserver')]
        return dns_servers
    except Exception as e:
        print(f"Failed to get current DNS servers: {e}")
        return []

# 示例：设置DNS服务器
dns_servers = ['8.8.8.8', '8.8.4.4']
set_dns_servers(dns_servers)

# 示例：获取当前DNS服务器
current_dns_servers = get_current_dns_servers()
print(f"Current DNS servers: {current_dns_servers}")