| Store | Cart

[Python-Dev] (try-except) conditional expression similar to (if-else) conditional (PEP 308)

From: Kristján Valur Jónsson <kris...@ccpgames.com>
Fri, 7 Aug 2009 10:22:14 +0000
Unless I am very much mistaken, this is the approach Ruby takes.
Everything is an expression.  For example, the value of a block is the value of
The last expression in the block.

I've never understood the need to have a distinction betwen statements and expressions, not when expressions can have side effects.  It's like that differentce between procedures and functions in pascal that only serves to confuse

K
> -----Original Message-----> From: python-dev-bounces+kristjan=ccpgames.com at python.org> [mailto:python-dev-bounces+kristjan=ccpgames.com at python.org] On Behalf> Of Xavier Morel> Sent: 6. ?g?st 2009 10:25> To: python-dev at python.org> Subject: Re: [Python-Dev] (try-except) conditional expression similar> to (if-else) conditional (PEP 308)> Wouldn't it be smarter to fix the issue once and for all by looking> into making Python's compound statements (or even all statements> without restrictions) expressions that can return values in the first> place? Now I don't know if it's actually possible, but if it is the> problem becomes solved not just for try:except: (and twice so for> if:else:) but also for while:, for: (though that one's already served> pretty well by comprehensions) and with:.> 

Recent Messages in this Thread
Jeff McAninch Aug 05, 2009 10:22 pm
Raymond Hettinger Aug 06, 2009 12:59 am
P.J. Eby Aug 06, 2009 01:20 am
Nick Coghlan Aug 06, 2009 10:47 am
Dj Gilcrease Aug 06, 2009 11:18 am
MRAB Aug 06, 2009 11:39 am
Jeff McAninch Aug 06, 2009 02:36 pm
Dino Viehland Aug 06, 2009 09:55 pm
MRAB Aug 06, 2009 11:33 pm
Dino Viehland Aug 07, 2009 12:01 am
MRAB Aug 07, 2009 12:22 am
Jeff McAninch Aug 07, 2009 10:14 am
MRAB Aug 07, 2009 11:03 am
Dj Gilcrease Aug 10, 2009 02:29 pm
Jeff McAninch Aug 06, 2009 02:11 am
Antoine Pitrou Aug 06, 2009 11:32 am
Xavier Morel Aug 06, 2009 10:25 am
Russell E. Owen Aug 06, 2009 07:55 pm
MRAB Aug 07, 2009 12:36 am
Kristján Valur Jónsson Aug 07, 2009 10:22 am
ilya Aug 07, 2009 11:06 am
Michael Foord Aug 07, 2009 11:22 am
Alex Martelli Aug 07, 2009 02:55 pm
Steven DAprano Aug 08, 2009 06:02 am
Xavier Morel Aug 08, 2009 08:17 am
Stephen J. Turnbull Aug 08, 2009 01:19 pm
Alexander Kozlovsky Aug 14, 2009 10:41 pm
Steven DAprano Aug 10, 2009 11:45 pm
Messages in this thread