text: from django.conf import settings
  from django.core.validators import EmailValidator, ValidationError
  
  import redis
  
  
  def get_redis_connection():
      """
      Helper used for obtain a raw redis client.
      """
      from redis_cache.cache import pool
      connection_pool = pool.get_connection_pool(
          parser_class=redis.connection.HiredisParser,
          connection_pool_class=redis.ConnectionPool,
          connection_pool_class_kwargs={},
          **settings.REDIS)
      return redis.Redis(connection_pool=connection_pool, **settings.REDIS)
  
  
  def is_email(value):
      try:
          EmailValidator()(value)
      except ValidationError:
          return False
      else:
          return True
  