code: def contains_set(self, other, atol=0.0):
          
          if self is other:
              return True
  
          try:
              return (self.approx_contains(other.min(), atol) and
                      self.approx_contains(other.max(), atol))
          except AttributeError:
              raise AttributeError('cannot test {!r} without `min` and `max` '
                                   'methods'.format(other))
docs: Return ``True`` if ``other`` is (almost) contained in this set.
  
          Parameters
          ----------
          other : `Set`
              Set to be tested.
          atol : float, optional
              Maximum allowed distance in maximum norm from ``other``
              to ``self``.
  
          Raises
          ------
          AttributeError
              if ``other`` does not have both ``min`` and ``max`` methods.
  
          Examples
          --------
          >>> min_pt1, max_pt1 = [-1, 0, 2], [-0.5, 0, 3]
          >>> rbox1 = IntervalProd(min_pt1, max_pt1)
          >>> min_pt2, max_pt2 = [-0.6, 0, 2.1], [-0.5, 0, 2.5]
          >>> rbox2 = IntervalProd(min_pt2, max_pt2)
          >>> rbox1.contains_set(rbox2)
          True
          >>> rbox2.contains_set(rbox1)
          False