[Python-ideas] Making code objects filename an absolute path.

[Joao S. O. Bueno]

On Fri, 24 May 2019 at 16:49, Batuhan Taskaya <isidentical at gmail.com> wrote:

> > changing this will probably break code
> It is why i'm suggesting making the real transition at 4.0 and adding a
> future flag for now.
>


It is also not reasonable to suppose that "since python 4 is looming in the
horizon we can schedule a lot
of breaking changes for that".  The incompatible changes that took place
on 2->3 won't happen again.

If the absolute path for __file__ is needed and you can demonstrate it, it
is safer
to create another  property like __abs_file__
(this has happened with __qualname__ for example)



> > And so you need to justify *why* you think that's acceptable
> I dont know it is acceptable or not, i saw this issue triaged to stage
> "patch required". AFAIK it means someone needs to write a patch for this
> issue and i wrote. I'm posting it here because i need to know do i have to
> write a pep or just give bpo link to __future__ page.
>
> On Fri, May 24, 2019 at 10:34 PM Brett Cannon <brett at python.org> wrote:
>
>>
>>
>> On Fri, May 24, 2019 at 11:52 AM Batuhan Taskaya <isidentical at gmail.com>
>> wrote:
>>
>>> The bpo i referenced can explain it better. An example;
>>>
>>>    def foo(): pass
>>>    assert foo.__code__.co_filename = os.path.abspath(foo.__code__.co_filename)
>>>
>>>
>> Do realize there's a reason that issue has been open for well over five
>> years: changing this will probably break code. And so you need to justify
>> *why* you think that's acceptable since Python has existed with these
>> semantics on code objects for decades as this point.
>>
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