vk_friends.py

import requests

ids = [1, 2, 3, 4, 5, 6]

frs = {}

for id in ids:
    r = requests.get('https://api.vk.com/method/friends.get', {'user_id': id})
    frs.update({id: r.json()['response']})
    print(r)

m = {}

for u in frs:
    for a in frs[u]:
        m.update({a: m.get(a, 0) + 1})

res = {}
for n in range(3, 7):
    te = {}
    for k in m:
        if m[k] == n:
            te.setdefault(k, m[k])
    res.setdefault(n, te)

for i in res:
    print(i)
    for j in res[i]:
        r = requests.get('https://api.vk.com/method/users.get', {'user_ids': j})
        v = r.json()['response'][0]
        print(j, v['first_name'], v['last_name'], 'vk.com/id{}'.format(j))