if __name__ == '__main__': app.run(debug=True, host=host, port=port)where host is the ip of your interface, eg. 192.168.0.2 and port is the port number (default is 5000)
check ifconfig (linux) for the ip address to use (ipconfig for windows)
You should also make sure that the port is not firewalled. If you want to use a port number < 1024 than you need to be root.