代理服务器的设置

def use_proxy(proxy_addr,url):
    import urllib.request
    proxy=urllib.request.ProxyHander({'http':proxy_addr})
        opener=urllib.request.build_opener(proxy,urllib.request.HTTPHandler)
    urllib.request.install_opener(opener)
    data=urllib.request.urlopen(url).read().decode('utf-8')
    return data
    
proxy_addr="202.75.210.45:7777"
data=use_proxy(proxy_addr,"http://www.baidu.com")
print(len(data))