def decrby(self, key, decrement):
        """Decrement the integer value of a key by the given number.

        :raises TypeError: if decrement is not int
        """
        if not isinstance(decrement, int):
            raise TypeError("decrement must be of type int")
        return self.execute(b'DECRBY', key, decrement)
def decrby ( self , key , decrement ) : if not isinstance ( decrement , int ) : raise TypeError ( "decrement must be of type int" ) return self . execute ( b'DECRBY' , key , decrement )
Decrement the integer value of a key by the given number.

        :raises TypeError: if decrement is not int