Python-сообщество

 # -*- coding: utf-8 -*-
import requests
import json
token = "Токен"
application_id = 5182500
group_id = 172392334
owner_id_group = -172392334
foo = 'Русский текст 2000 символов'
requests.post('https://api.vk.com/method/wall.post', params={'access_token': token,
                                                                    'owner_id': owner_id_group,
                                                                    'from_group': 1,
                                                                    'message': foo,
                                                                    'signed': 0,
                                                                   'v':"5.52"}).json()  

 foo = u'Русский текст 2000 символов'
 s=str.decode('utf-8')
s=str.decode('cp1251')
s=str.encode('cp1251')
s=str.encode('utf-8')
# -*- coding: utf-8 -*-
# -*- coding: cp1251 -*-