Python, I want to make list json.dumped But, error 'dict' object has no attribute 'dumps' -

below python code

r = requests.get("https://www.googleapis.com/youtube/v3/search?part=snippet&maxresults=50&channelid="+channelid+"&order=date&key="+developer_key)          json = r.json()                                                                                                                                            items = json.get("items")                                                                                                                                  videos = []                                                                                                                                                x in items:                                                                                                                                              title = x["snippet"]["title"]                                                                                                                              videoid = x["id"]["videoid"]                                                                                                                               channeltitle = x["snippet"]["channeltitle"]                                                                                                                cam_thumbnails = x["snippet"]["thumbnails"]["medium"]["url"]                                                                                               publishedat = x["snippet"]["publishedat"]                                                                                                                  data = { "title" : title,                                                                                                                                           "videoid" : videoid,                                                                                                                                       "channeltitle" : channeltitle,                                                                                                                             "cam_thumbnails" : cam_thumbnails,                                                                                                                         "publishedat" : publishedat,                                                                                                                               }                                                                                                                                                 videos.append(data)                                                                                                                                      print json.dumps(videos) # code cause problem 

i inserted 'dict' 'list' , called json.dumps() but, error arised error messege 'dict' object has no attribute 'dumps'

what problem?, , how can solve problem?

previously, must have imported json module, writing import json, creates variable in namespace, name json. then, json = r.json(), ie. assign new reference name json, doesn't represents module json anymore, but, instead, result of r.json() method. thus, can't use anymore json module using syntax json.function(), because json result of r.json(). resolve problem, must change name of variable named json in example, to, example, json_dict or else.