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How to return JSON array using bottle - minimal example

Returning a JSON array in bottle involves setting the response content type to application/json and then manually dumping the array using json.dumps():

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

@route('/')
def json_array():
    response.content_type = 'application/json'
    return json.dumps(["a", "b", "c"])

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