code: def hlen(key, host=None, port=None, db=None, password=None):
      '''
      Returns number of fields of a hash.
  
      .. versionadded:: 2017.7.0
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' redis.hlen foo_hash
      '''
      server = _connect(host, port, db, password)
      return server.hlen(keyf hlen(key, host=None, port=None, db=None, password=None):
      '''
      Returns number of fields of a hash.
  
      .. versionadded:: 2017.7.0
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' redis.hlen foo_hash
      '''
      server = _connect(host, port, db, password)
      return server.hlen(key)
docs: Returns number of fields of a hash.
  
      .. versionadded:: 2017.7.0
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' redis.hlen foo_hash