HTTP Error 503: Service Temporarily Unavailable 问题解决

通过定义一个Header参数来解决

user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36'
headers = {
     
    'User-Agent': user_agent
}

#定义Request
req = urllib.request.Request(url,headers=headers)

再次运行成功

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