[Solved] Python2 Flask startup error: [Errno 10053]

First of all, this is not an exception of the Flask library. This error often appears in Python2.

The problem is: the problem with the SocketServer module in Python2.


  1. Do not use the built-in Server, start the service through gunicoon or uwsgi
  2. runAdd in the method, threadedparameters:
  1. Upgrade to Python3

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