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尝试使用请求函数来实现重试/退避，然后在所有重试失败时返回 HTTP 状态。似乎我可以让重试工作或使用 try/except，但不能同时使用两者。包装在另一个函数中没有帮助。

OSX mojave 上的 Python 3.7.7 请求 2.24.0 坚韧 6.2.0

带有装饰器且没有 try/except 的函数 1 调用坚韧规则，但我没有收到 http 错误作为返回：

In [1330]: @retry(reraise=True,wait=wait_fixed(1), stop=stop_after_attempt(3))
      ...: def geturl(url):
      ...:     """
      ...:     get the url and raise http request errors for tenacity
      ...:     """
      ...:     print(datetime.now().strftime('%Y-%m-%d-%H:%M:%S'))
      ...:     headers = {'user-agent': 'my-app/0.0.1','Content-Type':'application/json'}
      ...:     data = {'name':'testcall','service':'armor'}
      ...:     r=None
      ...:     r = requests.post(url, data=json.dumps(data), headers=headers)
      ...:     r.raise_for_status()
      ...:     return r.status_code
      ...:

In [1331]: geturl(flakyurl)
2020-09-07-14:48:19
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): snout:7777
DEBUG:urllib3.connectionpool:http://snout:7777 "POST /flakyservice HTTP/1.1" 406 27
2020-09-07-14:48:20
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): snout:7777
DEBUG:urllib3.connectionpool:http://snout:7777 "POST /flakyservice HTTP/1.1" 405 27
2020-09-07-14:48:21
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): snout:7777
DEBUG:urllib3.connectionpool:http://snout:7777 "POST /flakyservice HTTP/1.1" 405 27
---------------------------------------------------------------------------
HTTPError                                 Traceback (most recent call last)
...

HTTPError: 405 Client Error: METHOD NOT ALLOWED for url: http://snout:7777/flakyservice

带有 try/except 的函数 2 得到正确的错误，但未能调用坚韧

In [1332]: @retry(reraise=True,wait=wait_fixed(1), stop=stop_after_attempt(3))
      ...: def geturl3(url):
      ...:         print(datetime.now().strftime('%Y-%m-%d-%H:%M:%S'))
      ...:         headers = {'user-agent': 'my-app/0.0.1','Content-Type':'application/json'}
      ...:         data = {'name':'testcall','service':'armor'}
      ...:         r=None
      ...:         try:
      ...:             r = requests.post(url, data=json.dumps(data), headers=headers)
      ...:             r.raise_for_status()
      ...:             return 'sent', r.status_code
      ...:         except requests.exceptions.HTTPError as err:
      ...:             return 'http failed', err
In [1334]: geturl3(flakyurl)
2020-09-07-15:23:00
DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): snout:7777
DEBUG:urllib3.connectionpool:http://snout:7777 "POST /flakyservice HTTP/1.1" 404 27
Out[1334]:
('http failed',
 requests.exceptions.HTTPError('404 Client Error: NOT FOUND for url: http://snout:7777/flakyservice'))

编辑：修复是在异常之后 r.raise_for_status() - 这会重新引发并抓住韧性

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1 回答 1

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在已编辑的问题中回答：修复是 r.raise_for_status() 在异常之后 - 这会重新引发并抓住坚韧

于 2020-09-11T23:26:31.270 回答