text: #!/usr/bin/env python
  
  from __future__ import print_function
  from future.standard_library import install_aliases
  install_aliases()
  
  from urllib.parse import urlparse, urlencode
  from urllib.request import urlopen, Request
  from urllib.error import HTTPError
  
  import json
  import os
  
  from flask import Flask
  from flask import request
  from flask import make_response
  
  # Flask app should start in global layout
  app = Flask(__name__)
  
  
  def processRequest(req):
      baseurl = "https://query.yahooapis.com/v1/public/yql?"
      yql_query = makeYqlQuery(req)
      if yql_query is None:
          return {}
      yql_url = baseurl + urlencode({'q': yql_query}) + "&format=json"
      result = urlopen(yql_url).read()
      data = json.loads(result)
      res = makeWebhookResult(data)
      return res
  
  
  def makeYqlQuery(req):
      result = req.get("result")
      parameters = result.get("parameters")
      city = parameters.get("geo-city")
      if city is None:
          return None
  
      return "select * from weather.forecast where woeid in (select woeid from geo.places(1) where text='" + city + "')"
  
  
  def makeWebhookResult(data):
      query = data.get('query')
      if query is None:
          return {}
  
      result = query.get('results')
      if result is None:
          return {}
  
      channel = result.get('channel')
      if channel is None:
          return {}
  
      item = channel.get('item')
      location = channel.get('location')
      units = channel.get('units')
      if (location is None) or (item is None) or (units is None):
          return {}
  
      condition = item.get('condition')
      if condition is None:
          return {}
  
      # print(json.dumps(item, indent=4))
  
      speech = "Today in " + location.get('city') + ": " + condition.get('text') + \
               ", the temperature is " + condition.get('temp') + " " + units.get('temperature')
  
      print("Response:")
      print(speech)
  
      return {
          "speech": speech,
          "displayText": speech,
          # "data": data,
          # "contextOut": [],
          "source": "apiai-weather-webhook-sample"
      }
  
  
  if __name__ == '__main__':
      port = int(os.getenv('PORT', 5000))
  
      print("Starting app on port %d" % port)
  
      app.run(debug=False, port=port, host='0.0.0.0')