TypeError：JSON 对象必须是 str，而不是 Python 3.4 的“Response”

我收到此错误，但我无法弄清楚问题是什么：

Traceback (most recent call last):
  File "C:/Python34/Scripts/ddg.py", line 8, in <module>
    data = json.loads(r)
  File "C:\Python34\lib\json\__init__.py", line 312, in loads
    s.__class__.__name__))
TypeError: the JSON object must be str, not 'Response'

这是我的代码：

import requests, json

search_q = input('Enter query: ')

r = requests.get('https://api.duckduckgo.com/?q=%s&format=json&pretty=1' % search_q)

if r.status_code == requests.codes.ok:
    data = json.loads(r)
    node = data['RelatedTopics']['Result']
    print (str(node))
else:
    bad_r.raise_for_status()

无需手动加载JSON；响应有一个json method.

data = r.json()