[Python-Dev] ',' precedence in documentation (original) (raw)

Guido van Rossum guido at python.org
Mon Sep 15 16:15:58 CEST 2008

On Mon, Sep 15, 2008 at 4:49 AM, Steven D'Aprano <steve at pearwood.info> wrote:

On Mon, 15 Sep 2008 01:55:00 pm Leif Walsh wrote:

On Sun, Sep 14, 2008 at 11:36 PM, Eric Smith <eric at trueblade.com> wrote: > If we really want to change it, I think: > assert B as S > is better because S is the string to report; that is, "if B is > false, report the problem as the string S". > > 'else' implies to me what to do if you're not failing the assert, > which is not the case.

Doesn't imply that to me. I read it as 'first you assert that B is true; if not (else), you print S'. Personally, I like 'else' better than 'as', because 'as' seems to contain the notion of assignment. I agree with Leif on both his comments. I don't particularly see the need to change assert, but if it has to change, I'd be perfectly happy with one of "assert B else S" or "assert B except S".

In private mail someone suggested the Java assert syntax:

assert expression : expression

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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