Re: When to use assert

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Date	2014-10-26 20:51 +1100
Subject	Re: When to use assert
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.15193.1414317082.18130.python-list@python.org> (permalink)

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On Sun, Oct 26, 2014 at 8:39 PM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> In the absence of correctness proofs for your code, anything you do (unit
> tests, assertions, regression tests, etc.) is just a statistically sampling
> of all the potential paths your code might take, hoping to capture bugs. As
> any statistician will tell you, eventually you will reach the point of
> diminishing returns, where adding more samples isn't worth the cost. That
> point will depend on the cost in programmer effort, the performance
> implications, and your confidence in the code.

That's about the size of it, I guess. How much testing versus how much
time actually spent coding?

I'm pretty sure a lot of my code has the wrong ratio... I'm just not
sure, for a lot of the code, which direction it's wrong :)

ChrisA

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Re: When to use assert Anton <anton.schattenfeld@gmail.com> - 2014-10-21 00:48 -0700
  Re: When to use assert Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-22 12:44 +1100
    Re: When to use assert Chris Angelico <rosuav@gmail.com> - 2014-10-22 12:53 +1100
      Re: When to use assert Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-23 02:49 +1100
        Re: When to use assert Chris Angelico <rosuav@gmail.com> - 2014-10-23 03:01 +1100
        Re: When to use assert Dan Stromberg <drsalists@gmail.com> - 2014-10-22 09:18 -0700
          Re: When to use assert Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-24 18:49 +1100
            Re: When to use assert Chris Angelico <rosuav@gmail.com> - 2014-10-24 19:18 +1100
              Re: When to use assert Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-26 20:39 +1100
                Re: When to use assert Chris Angelico <rosuav@gmail.com> - 2014-10-26 20:51 +1100

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