[Python-Dev] PEP 285: Adding a bool type (original) (raw)

David Abrahams David Abrahams" <david.abrahams@rcn.com
Sat, 30 Mar 2002 11:11:29 -0500

----- Original Message ----- From: "Andrew Koenig" <ark@research.att.com>

Liskov substitutibility would seem to suggest deriving int from bool, not the other way around. That is: If I have a program that uses bool values, I can change it so that it uses int values without affecting the behavior of the program. The reverse is not true.

Even that won't work, because of the different repr/str behavior... one reason I don't like the inheritance relationship.

I wonder if this is the circle-ellipse problem over again?

square-rectangle-ly y'rs, dave