各位，我今天在测试调用天气查询的API，现在的字段跟老师讲的不太一样，我按照逻辑修改了，但是总是报错AttributeError: ‘NoneType’ object has no attribute ‘get’，谁能给我解答一下呢？
源码如下：
def weather(cityname):
"""
:param cityname: 城市名字
:return: 返回实况天气
"""
key = '***************'
api = 'http://apis.juhe.cn/simpleWeather/query’
params = ‘cityname=%s&key=%s’ % (cityname, key)
url = api + ‘?’ + params
response = requests.get(url=url, proxies=proxy.proxy())
#使用json模块的load方法加载json数据，返回一个字典
json_data = json.loads(response.text)
result = json_data.get(‘result’)
realtime = result.get(‘realtime’)
response = {}
response[‘temperature’] = realtime.get(‘temperature’)
response[‘direct’] = realtime.get(‘direct’)
response[‘power’] = realtime.get(‘power’)
response[‘humidity’] = realtime.get(‘humidity’)
return response
报错如下：