code: def decr(self, name, amount=1):
                                  
          amount = get_positive_integer('amount', amount)
          return self.execute_command('decr', name, amount)
docs: Decrease the value at key ``name`` by ``amount``. If no key exists, the value
          will be initialized as 0 - ``amount`` .
  
          Like **Redis.DECR**
  
          :param string name: the key name
          :param int amount: decrements
          :return: the integer value at key ``name``
          :rtype: int
  
          >>> ssdb.decr('set_count', 3)
          7
          >>> ssdb.decr('set_count', 1)
          6
          >>> ssdb.decr('temp_count', 42)
          -42