At the entrance there is a dictionary:

{'response': [ {'uid': 1296468, 'first_name': 'Aleksandr', 'last_name': 'Kasatkin', 'last_seen': {'time': 1522334419, 'platform': 3}, 'online': 0, 'user_id': 1296468}, {'uid': 565862, 'first_name': 'Alexander', 'last_name': 'Osipenko', 'last_seen': {'time': 1522919428, 'platform': 4}, 'online': 0, 'user_id': 565862} ]}

The output should be:

 num = 2

    2 answers 2

     dict = {'response': [ {'uid': 1296468, 'first_name': 'Aleksandr', 'last_name': 'Kasatkin', 'last_seen': {'time': 1522334419, 'platform': 3}, 'online': 0, 'user_id': 1296468}, {'uid': 565862, 'first_name': 'Alexander', 'last_name': 'Osipenko', 'last_seen': {'time': 1522919428, 'platform': 4}, 'online': 0, 'user_id': 565862} ]} print len(dict['response']) 
       c = {'response': [ {'uid': 1296468, 'first_name': 'Aleksandr', 'last_name': 'Kasatkin', 'last_seen': {'time': 1522334419, 'platform': 3}, 'online': 0, 'user_id': 1296468}, {'uid': 565862, 'first_name': 'Alexander', 'last_name': 'Osipenko', 'last_seen': {'time': 1522919428, 'platform': 4}, 'online': 0, 'user_id': 565862} ]} print("num = {}".format(len(c["response"])))

      Check

       <script src="https://cdn.rawgit.com/brython-dev/brython/3.4.0/www/src/brython.js"></script><body onload="brython()"><script type="text/python"> c = {'response': [ {'uid': 1296468, 'first_name': 'Aleksandr', 'last_name': 'Kasatkin', 'last_seen': {'time': 1522334419, 'platform': 3}, 'online': 0, 'user_id': 1296468}, {'uid': 565862, 'first_name': 'Alexander', 'last_name': 'Osipenko', 'last_seen': {'time': 1522919428, 'platform': 4}, 'online': 0, 'user_id': 565862} ]} print("num = {}".format(len(c["response"]))) </script> </body>

      Conclusion

       num = 2