old_contents: # coding=utf-8
  
  """
  API Client base class
  """
  
  import requests
  
  from multidimensional_urlencode import urlencode as query_builder
  from retailcrm.response import Response
  
  
  class Base(object):
      """RetailCRM API client"""
  
      def __init__(self, crm_url, api_key, version):
          self.api_url = crm_url + '/api'
          self.api_key = api_key
          self.api_version = version
          self.parameters = {}
  
      def get(self, url, version=True):
          """
          Get request
          :param url: string
          :param version: boolean
          :return: Response
          """
          base_url = self.api_url + '/' + self.api_version if version else self.api_url
          requests_url = base_url + url if not self.parameters else base_url + url + "?" + query_builder(self.parameters)
          response = requests.get(requests_url, headers={
              'X-API-KEY': self.api_key})
  
          return Response(response.status_code, response.json())
  
      def post(self, url, version=True):
          """
          Post request
          :return: Response
          """
          base_url = self.api_url + '/' + self.api_version if version else self.api_url
          requests_url = base_url + url
          response = requests.post(requests_url, data=self.parameters, headers={
              'X-API-KEY': self.api_key})
  
          return Response(response.status_code, response.json())
  
      def api_versions(self):
          """
          :return: Response
          """
          return self.get('/api-versions', False)
  
      def api_credentials(self):
          """
          :return: Response
          """
          return self.get('/credentials', False)
  
      def statistic_update(self):
          """
          :return Response
          """
          return self.get('/statistic/update')
  
new_contents: # coding=utf-8
  
  """
  API Client base class
  """
  
  import requests
  
  from multidimensional_urlencode import urlencode as query_builder
  from retailcrm.response import Response
  
  
  class Base(object):
      """RetailCRM API client"""
  
      def __init__(self, crm_url, api_key, version):
          self.api_url = crm_url + '/api'
          self.api_key = api_key
          self.api_version = version
          self.parameters = {}
  
      def get(self, url, version=True):
          """
          Get request
          :param url: string
          :param version: boolean
          :return: Response
          """
          base_url = self.api_url + '/' + self.api_version if version else self.api_url
          requests_url = base_url + url if not self.parameters else base_url + url + "?" + query_builder(self.parameters)
          response = requests.get(requests_url, headers={
              'X-API-KEY': self.api_key})
          self.parameters = {}
  
          return Response(response.status_code, response.json())
  
      def post(self, url, version=True):
          """
          Post request
          :return: Response
          """
          base_url = self.api_url + '/' + self.api_version if version else self.api_url
          requests_url = base_url + url
          response = requests.post(requests_url, data=self.parameters, headers={
              'X-API-KEY': self.api_key})
          self.parameters = {}
          
          return Response(response.status_code, response.json())
  
      def api_versions(self):
          """
          :return: Response
          """
          return self.get('/api-versions', False)
  
      def api_credentials(self):
          """
          :return: Response
          """
          return self.get('/credentials', False)
  
      def statistic_update(self):
          """
          :return Response
          """
          return self.get('/statistic/update')
  
subject: Fix Base.parameters. Now they will refresh after making a requests