无法连接sql服务器失败

ping <服务器IP地址>

# 对于Windows系统
net start MSSQLSERVER

# 对于Linux系统（以MySQL为例）
sudo systemctl start mysql

# 对于Windows防火墙
netsh advfirewall firewall add rule name="Open Port 1433" dir=in action=allow protocol=TCP localport=1433

# 对于Linux防火墙（以iptables为例）
sudo iptables -A INPUT -p tcp --dport 1433 -j ACCEPT

import mysql.connector

try:
    connection = mysql.connector.connect(
        host="localhost",
        user="yourusername",
        password="yourpassword",
        database="yourdatabase"
    )
    if connection.is_connected():
        db_info = connection.get_server_info()
        print("Connected to MySQL Server version ", db_info)
except mysql.connector.Error as e:
    print("Error while connecting to MySQL", e)
finally:
    if connection.is_connected():
        cursor.close()
        connection.close()
        print("MySQL connection is closed")