input: Write a function to design a web server in Python using the Flask framework that serves a JSON object containing the current temperature for a city based on the city name provided in the request.
  
  from flask import Flask, request
  import requests
  import json
  
  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 get_temp('London') == {'temperature': 280.15}
  assert get_temp('Paris') == {'temperature': 285.15}
  assert get_temp('New York') == {'temperature': 278.15}
  assert get_temp('Tokyo') == {'temperature': 290.15}
  assert get_temp('Sydney') == {'temperature': 300.15}
output: 
  def get_temp(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']}
  