text: import os
  import typing
  
  ENCODING = 'utf-8'
  CLUSTER_IPS = [cluster_ip for cluster_ip in os.environ['CLUSTER_IPS'].split(',') if cluster_ip]
  if len(CLUSTER_IPS) < 1:
      raise NotImplementedError('CLUSTER_IPS ENVVar required')
  CLUSTER_PORT = int(os.environ.get('CLUSTER_PORT', 9042))
  CLUSTER_USERNAME = os.environ.get('CLUSTER_USERNAME', None)
  CLUSTER_PASSWORD = os.environ.get('CLUSTER_PASSWORD', None)
  TABLES = {}
  SESSIONS = {}
  DATETIME_FORMAT = '%Y-%m-%dT%H:%M:%SZ'
  PWN = typing.TypeVar('PWN')
  