The Flask docs describe an externally visible server that allows users on your network to access your running app. The docs seem to assume a level of understanding that I don't possess and I can't figure out how to make it work.
I've adjusted my app.run() method, passing it the host='0.0.0.0' argument, as instructed in the docs.
How does a user in my network access my app? What address do they visit? Do other settings need to be configured?
You should be able to access it by going to: 0.0.0.0:port.
Someone on your network can access it by going to your-local-ip:port.
Depending on your system, there is a way of finding your local IP address, but it should look something like 192.168.X.X.
来源：https://stackoverflow.com/questions/18793115/flask-externally-visible-dev-server