【解决方案】During handling of the above exception, another exception occurred:

问题

在大量访问网页时，有可能出现这种报错：

14-09-2019 12:1138 root: ERROR: HTTPSConnectionPool(host='www.mzitu.com', port=443): Max retries exceeded with url: /187465/31 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',))
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 137, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 67, in create_connection
    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
  File "/usr/lib/python3.5/socket.py", line 732, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [