code: def get_free_space(self):
      result, response_content = self.__send_request(
          "GET", yandex_disk.__HTTP_DISK
      )
      if result != 200:
          print("ERROR: Impossible to obtain information about disk.")
          return None
  
      json_content = json.loads(response_content)
      total_space = int(json_content["total_space"])
      used_space = int(json_content["used_space"])
  
      free_space = (total_space - used_space) / 1000000
  
      return free_space
  
file_path: pyclustering/ci/cloud/cloud/yandex_disk.py
imports: import http.client
  import json
  import os.path
  import urllib.request
  from urllib.parse import urlparse
label_desc: Use image node_id 2 for calling the yandex_disk obj's underlying member method code with example usage: obj.get_free_space() and returns: free_space, None