From Json VK output, creating lists this format ['Name', 'Address']

format_json_friends.py

from collections import namedtuple
friends_json = [{ 
	'uid': 16734834,
	'first_name': 'Alena',
	'last_name': 'Grin',
	'deactivated': 'banned',
	'photo': 'http://vk.com/images/deactivated_c.gif',
	'online': 0,
	'user_id': 16734834,
	'lists': [26]
	}, {
	'uid': 138017573,
	'first_name': 'Alena',
	'last_name': 'Kotkova',
	'city': '2',
	'country': '1',
	'photo': 'http://cs413026.vk.me/v413026573/1935/Mv17_gs8UZY.jpg',
	'online': 1,
	'user_id': 138017573,
	'lists': [26]
	}]

def get_friends_from_json(friends_json):
        Friend = namedtuple('Friend', ["name", "addres", "city", "country"])
        friends = []
        for field in friends_json:
            if 'country' in field:
                if 'city' in field:
                    # Friends with city and country
                    friends.append(Friend(format(field, 'first_name', 'last_name'),
                                          format(field, 'city', 'country'), True, True))

                elif 'city' not in field:
                    friends.append(Friend((format(field, 'first_name', 'last_name')),
                                          field['country'], False, True))
            else:
            # Who haven't home
                friends.append(Friend((format(field, 'first_name', 'last_name')),
                                      'Antarctica', False, False))
        return friends

def format(field, key1, key2):
	return ('%s %s' % (field[key1], field[key2]))

print get_friends(friends_json)