AJ Ostergaard wrote: > I'm not suggesting it's not operating as advertised - I'm suggesting the > 'advertising' is slightly sguiffy if you catch my drift. I guess it's > just me that finds it slightly counter intuitive. Surely intuitively the > expression is "and" and therefore should always return a boolean? > > I'll shut up now. ;) > You might think so, and it wouldn't be an entirely unreasonable thought, but in practice it makes a lot of sense to retain the original value where possible.
The fact is that any left-hand operand that evaluates to false in a Boolean context can be used as it stands rather than being converted to Boolean first. So the conversion is essentially useless processing. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
