On 12/23/2013 07:10 AM, Roy Smith wrote:
In article <[email protected]>,
  Ethan Furman <[email protected]> wrote:

On 12/22/2013 08:57 PM, Roy Smith wrote:
In article <[email protected]>,
   Steven D'Aprano <[email protected]> wrote:

Anyway, I may be completely misinterpreting what I'm reading. Perhaps the
assertion is checking a function invariant ("one of the strategies will
always succeed") in which case you're doing it exactly right and I should
shut up now :-)

Yes :-)

More specifically, the assertion exception will get caught way up in
some django middleware which will log a stack trace and return a HTTP
50-something.  This will typically be followed by somebody like me
noticing the stack dump and trying to figure out WTF happened.

This is completely misusing what assertions are for.  I hope this bit of
middleware (or django itself) is very clear
about never running with assertions turned off.

Sigh.  Sometimes I'm not sure which is worse.  The anti-assertion
zealotry on this list, or the anti-regex zealotry.

I am not a zealot (I'm not! Really!! ;) . I just find it alarming to have major pieces of software rely on a feature that can be so easily tuned out, and it wasn't clear from your comment that it was /any/ exception.

Mostly I don't want newbies thinking "Hey!  I can use assertions for all my 
confidence testing!"

Just as one data point OpenERP, which has a lot of good features, unfortunately 
uses assert to test user input.  :(

--
~Ethan~
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