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直到“requests”库支持指数退避的自动重试
ID:21887 / 打印
您可以使用自定义的适配器，并对所有 http/https 请求强制执行指数退避因子多次重试。请参阅下面的示例：
import requests from requests import adapters from urllib3.util import retry # create a transport adapter with a custom retry strategy. retries = retry( total=3, backoff_factor=3, status_forcelist=[500, 502, 503, 504] ) adapter = adapters.httpadapter(max_retries=retries) # ensure adapter is used for both http and https requests. session = requests.session() session.mount('https://', adapter) session.mount('http://', adapter) # testing the retry mechanism response = session.get("http://httpbin.org/status/500") 这将返回以下错误：
RetryError: HTTPConnectionPool(host='httpbin.org', port=80): Max retries exceeded with url: /status/500 (Caused by ResponseError('too many 500 error responses')) 不幸的是，似乎没有办法知道上述机制尝试了多少次重试，只有当所有尝试都已用尽时
参考
https://stackoverflow.com/a/47475019/4477547
