尽管捕获到异常，但仍打印回溯

Question

偶尔，我会无法收到 send/receive 这个 GroupMe API wrapper 的请求。我可以捕捉到引发的异常，但我仍然得到一个冗长的回溯，尽管程序继续运行。完整回溯：

could not recieve a response
Traceback (most recent call last):
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connection.py", line 137, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\util\connection.py", line 67, in create_connection
    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
  File "E:\Users\Sebastian\Anaconda3\lib\socket.py", line 743, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 559, in urlopen
    body=body, headers=headers)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 345, in _make_request
    self._validate_conn(conn)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 784, in _validate_conn
    conn.connect()
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connection.py", line 217, in connect
    conn = self._new_conn()
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connection.py", line 146, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CD65CF60F0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\adapters.py", line 376, in send
    timeout=timeout
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 609, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\packages\urllib3\util\retry.py", line 273, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
requests.packages.urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='api.groupme.com', port=443): Max retries exceeded with url: /v3/chats?token=98d6c1109f660135d705089a21c58196 (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CD65CF60F0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\groupy\session.py", line 25, in request
    response = super().request(*args, **kwargs)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "E:\Users\Sebastian\Anaconda3\lib\site-packages\requests\adapters.py", line 437, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='api.groupme.com', port=443): Max retries exceeded with url: /v3/chats?token=98d6c1109f660135d705089a21c58196 (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CD65CF60F0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',))

我觉得特别有趣的是它在 Traceback 之前以 "could not recieve a response"（包括拼写错误）开头，但我终究找不到那条线在哪里。它肯定不在我的代码中，也不在 groupy 模块的代码中。

Answer 1

不要相信 Github

上的搜索功能

尽管搜索 "recieve" on the repo, only a different occurrence of it showed up. However, the problem was in session.py，其中记录并引发了异常。

尽管捕获到异常，但仍打印回溯

Traceback is Printed Despite Exception Being Caught

python

traceback

python-requests

不要相信 Github