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

Guido van Rossum guido at python.org
Sun Nov 17 17:18:48 CET 2013

On Saturday, November 16, 2013, Steven D'Aprano wrote:

> On Sat, Nov 16, 2013 at 11:16:48AM -0500, Donald Stufft wrote:
> > Personally I think that none of the -O* should be removing asserts. It
> feels
> > like a foot gun to me. I’ve seen more than one codebase that would be
> > completely broken under -O* because they used asserts without even
> knowing
> > -O* existed.
> I agree that many people misuse asserts. I agree that this is a problem
> for them. But I disagree that the solution is to remove what I consider
> to be a useful feature, and a common one in other languages, just to
> protect people from their broken code.
> I prefer to see better efforts to educate them. To that end, I've taken
> the liberty of sending a post to python-list at python.org <javascript:;>describing when
> to use asserts, and when not to use them:
> https://mail.python.org/pipermail/python-list/2013-November/660401.html

Nice post!

> I will continue to use my best effort to encourage good use of
> assertions in Python.

Thank you!



--Guido van Rossum (on iPad)
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