Re: Type checking versus polymorphism (was: list(), tuple() should not place at "Built-in functions" in documentation)

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Date	Fri, 15 Jul 2011 22:02:03 -0700
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Subject	Re: Type checking versus polymorphism (was: list(), tuple() should not place at "Built-in functions" in documentation)
From	Chris Rebert <clp2@rebertia.com>
To	"Steven D'Aprano" <steve+comp.lang.python@pearwood.info>
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On Fri, Jul 15, 2011 at 7:47 PM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
<snip>
> Assertions are for testing internal program logic, not for validation.
>
> (I don't even like using assert for testing. How do you test your code with
> assertions turned off if you use assert for testing?)

I would think that would only matter if either the asserted
expressions caused side-effects or there was nontrivial logic in the
AssertionError handler, which would indicate a rather screwy codebase
and point to a possible PEBKAC issue that testing cannot hope to
remedy.

Cheers,
Chris
--
http://rebertia.com

Thread

Re: list(),tuple() should not place at "Built-in functions" in documentation Inside <fancheyujian@gmail.com> - 2011-07-15 12:53 -0700
  Type checking versus polymorphism (was: list(),tuple() should not place at "Built-in functions" in documentation) Ben Finney <ben+python@benfinney.id.au> - 2011-07-16 09:24 +1000
    Re: Type checking versus polymorphism (was: list(),tuple() should not place at "Built-in functions" in documentation) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-16 12:47 +1000
      Re: Type checking versus polymorphism (was: list(), tuple() should not place at "Built-in functions" in documentation) Chris Rebert <clp2@rebertia.com> - 2011-07-15 22:02 -0700
        Re: Type checking versus polymorphism (was: list(), tuple() should not place at "Built-in functions" in documentation) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-16 16:33 +1000
  Re: list(), tuple() should not place at "Built-in functions" in documentation Chris Angelico <rosuav@gmail.com> - 2011-07-16 09:27 +1000
    Liskov substitution principle (was: list(), tuple() should not place at "Built-in functions" in documentation) Ben Finney <ben+python@benfinney.id.au> - 2011-07-16 10:04 +1000
      Re: Liskov substitution principle (was: list(), tuple() should not place at "Built-in functions" in documentation) Chris Angelico <rosuav@gmail.com> - 2011-07-16 10:17 +1000
        Re: Liskov substitution principle Ben Finney <ben+python@benfinney.id.au> - 2011-07-16 11:47 +1000
  Re: list(),tuple() should not place at "Built-in functions" in documentation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-07-16 14:06 +1000

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