On Sun, 02 Nov 2014 21:32:13 +1100, Tim Delaney wrote: > On 2 November 2014 20:50, Denis McMahon <denismfmcma...@gmail.com> > wrote: > >> The question (I thought) was to write a class for Square that inherited >> a class Rectangle but imposed on it the additional constraints of a >> square over a rectangle, namely that length == width. >> >> > I'm late to the party and this has already been partially addressed in > the thread, but it always annoys me. A square is as much a rhombus with > 90 degree angles as it is a rectangle with equal length and width, and > yet I *never* see the former given as an option. > > If course, that's probably because rectangles have a multitude of uses > for user interfaces, whilst other quadrilaterals are somewhat less > useful.
And perhaps that also addresses the square - rectangle (or circle - ellipse) issue - square, rectangle and rhombus are all forms of quadrilateral, and perhaps should all inherit a base class Quadrilateral, rather than trying (and partially failing) to inherit each other. -- Denis McMahon, denismfmcma...@gmail.com -- https://mail.python.org/mailman/listinfo/python-list
