(self)
return self._left == self._right and self._top == self._bottom
Returns ``True`` if the rectangle is empty (i.e. it has zero
        width and height).

        Example::

            >>> r1 = Rectangle(10, 10, 30, 30)
            >>> r2 = Rectangle(70, 70, 90, 90)
            >>> r1.isempty()
            False
            >>> r2.isempty()
            False
            >>> r1.intersection(r2).isempty()
            True
Returns ``True`` if the rectangle is empty (i.e. it has zero
        width and height).
Returns True if the rectangle is empty ( i . e . it has zero width and height ) .
def isempty(self):
        """Returns ``True`` if the rectangle is empty (i.e. it has zero
        width and height).

        Example::

            >>> r1 = Rectangle(10, 10, 30, 30)
            >>> r2 = Rectangle(70, 70, 90, 90)
            >>> r1.isempty()
            False
            >>> r2.isempty()
            False
            >>> r1.intersection(r2).isempty()
            True
        """
        return self._left == self._right and self._top == self._bottom
def isempty ( self ) : return self . _left == self . _right and self . _top == self . _bottom