[Python-Dev] os.path.join failure mode

[Senthil Kumaran]

And this is not just with Python. Try any other dynamic language
(Ruby), send a function in place of a string and see failure msg.  And
if the question is really about path joins and path manipulations,
then I believe PEP 428 ( http://www.python.org/dev/peps/pep-0428/)
would be better candidate to address these scenarios.

On Sat, Feb 9, 2013 at 3:45 PM, Eric V. Smith <eric at trueblade.com> wrote:
> On 2/9/2013 6:23 PM, Greg Ewing wrote:
>> Terry Reedy wrote:
>>> I agree. Since the exception type is not documented and since no one
>>> should intentionally pass anything but strings, and therefore should
>>> not be writing
>>>
>>> try:
>>>   os.path.join(a,b)
>>> except AttributeError:
>>>   barf()
>>>
>>> I think it would be acceptable to make a change in 3.4.
>>
>> Why should we go out of our way to address this particular
>> case, and not any of the infinitely many other situations
>> where you could forget to add parens to a function call?
>>
>
> I agree we do not want to go down this slippery slope. The number of
> such places in the standard library is huge. The existing error message
> is one that a user should be able to understand, since it's so common.
>
> --
> Eric.
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