python判断计算机是否有网络连接的实例_python_脚本之家
https://www.jb51.net/article/152829.htm

def isConnected():
    import requests
    try:
        html = requests.get("http://www.baidu.com",timeout=2)
        print("网络正常")
        return 1
    except:
        print("网络异常")
        return 0

Flag = isConnected()
print(Flag)