input: Write a function to design a web server using the Flask framework in Python that serves a JSON object containing the current temperature for a city based on the city name given in the request. The function should return the Flask server code.
  
  def design_web_server():
      import requests
      import json
  
      from flask import Flask, request
  
      app = Flask(__name__)
  
      @app.route('/getTemp', methods=['POST'])
      def get_temp():
          city = request.json['city']
          url = 'http://api.openweathermap.org/data/2.5/weather?q={}&APPID=xxxxxx'
          r = requests.get(url.format(city))
          weather = json.loads(r.text)
          return {'temperature': weather['main']['temp']}
  
      if __name__ == '__main__':
          app.run(debug=True)
          
  assert design_web_server() is not None
  assert design_web_server() == design_web_server()
output: 
  def design_web_server():
      import requests
      import json
  
      from flask import Flask, request
  
      app = Flask(__name__)
  
      @app.route('/getTemp', methods=['POST'])
      def get_temp():
          city = request.json['city']
          url = 'http://api.openweathermap.org/data/2.5/weather?q={}&APPID=xxxxxx'
          r = requests.get(url.format(city))
          weather = json.loads(r.text)
          return {'temperature': weather['main']['temp']}
  
      if __name__ == '__main__':
          app.run(debug=True)
  