import vk
session = vk.Session()
api = vk.API(session, v = 5.8)
token = 'token'
id = 1
api.users.get(access_token = token, user_ids = id)
...
response = api.users.get(access_token = token, user_ids = id)
first_name = response[0]['first_name']
print(first_name)