return origin json

def get_token_by_code(self, code):
        '''return origin json'''
        url = 'https://openapi.youku.com/v2/oauth2/token'
        data = {'client_id': self.client_id,
                'client_secret': self.client_secret,
                'grant_type': 'authorization_code',
                'code': code,
                'redirect_uri': self.redirect_uri}
        r = requests.post(url, data=data)
        check_error(r)
        return r.json()