python-3.x - 如何使用 urllib3.Retry？

Question

我找到了下一个例子

def prepare_retry_requester(retries: int = 5, forcelist: List = (503,)) -> requests.Session:
    requester = requests.Session()
    retry = urllib3.Retry(total=retries, backoff_factor=1, status_forcelist=forcelist)
    for protocol in 'http://', 'https://':
        requester.mount(protocol, requests.adapters.HTTPAdapter(max_retries=retry))
    return requester


with prepare_retry_requester(forcelist=[502, 503, 413]) as requester:
    response = requester.post(url, data=serialized)

但是如果我得到 502，它仍然失败错误一段时间(服务器重新启动 10 秒)。

Answer 1

您正在将 max_retries 传递给 HTTPAdapter，它不会从 502 错误(按设计)中恢复，因为它不是连接错误(而是应用错误)。您可以改为将重试传递给 http.request。见retrying docs .