app.py

from flask import Flask, jsonify
import random


app = Flask(__name__)


@app.route("/")
def hello():
    return "Hello World!"


@app.route('/temperature')
def get_temp():
    data = {
        'data': random.uniform(10, 15)
    }
    return jsonify(data)


if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080)

$ pip install flask
python app.py
 * Serving Flask app "app" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://0.0.0.0:8080/ (Press CTRL+C to quit)

you can get a random temperature value from http://127.0.0.1:8080/temperature