def constraints(self):
        """
        :rtype tuple
        :return: All constraints represented by this and parent sets.
        """
        if self._parent is not None:
            return tuple(self._constraints) + self._parent.constraints
        return tuple(self._constraints)
def constraints(self):
        
        if self._parent is not None:
            return tuple(self._constraints) + self._parent.constraints
        return tuple(self._constraints)
def constraints ( self ) : if self . _parent is not None : return tuple ( self . _constraints ) + self . _parent . constraints return tuple ( self . _constraints )
:rtype tuple
        :return: All constraints represented by this and parent sets.
: rtype tuple : return : All constraints represented by this and parent sets .