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Python bottle minimal example

Minimal hello world-like example using the bottle HTTP server:

#!/usr/bin/env python3
from bottle import route, run

@route('/')
def index():
    return "Hello bottle!"

run(host='localhost', port=9000)

Run this file (and keep it running) and then navigate to http://localhost:9000 to see the Hello bottle! message.

In case you see this error message:

Traceback (most recent call last):
  File "./server.py", line 2, in <module>
    from bottle import route, run
ModuleNotFoundError: No module named 'bottle'

you need to install bottle using

sudo pip3 install bottle

or

sudo pip install bottle

depending on which Python version and configuration you use.