Simple bottle example

hellobottle.py

from bottle import *
 
@route("/test")
def test():
  return "<h1>Hello!</h1>"

run(host = "localhost", port=8100)

output

Bottle server starting up (using WSGIRefServer())...
Listening on http://localhost:8100/
Use Ctrl-C to quit.

This example will only listen on localhost. This is not a firewall problem. To make it listen on all interfaces, the host should be set to "0.0.0.0". Take a look closely at the host param at http://bottlepy.org/docs/dev/api.html#module-contents for detail.