[Python-Dev] (#19562) Asserts in Python stdlib code (datetime.py) (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Sun Nov 17 11:00:50 CET 2013

On Sun, 17 Nov 2013 18:04:43 +1100 Steven D'Aprano <steve at pearwood.info> wrote:

On Sat, Nov 16, 2013 at 04:46:00PM +0100, Antoine Pitrou wrote:

> I agree that conflating the two doesn't help the discussion. > While removing docstrings may be beneficial on memory-constrained > devices, I can't remember a single situation where I've wanted to > remove asserts on a production system. > > (I also tend to write less and less asserts in production code, since > all of them tend to go in unit tests instead, with the help of e.g. > mock objects) I'm the opposite. I like using asserts in my code, and while I don't typically run it with -O, I do think it is valuable to have to opportunity to remove asserts. I've certainly written code where -O has given a major micro-optimization of individual functions (anything up to 50% speedup). I've never measured if that lead to a significant whole-application speedup, but I assume that was some benefit. (I know, premature optimization and all that...)

So you assumed there was some benefit, but you never used it anyway?

Regards

Antoine.

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