Well, yep. You can't prevent programmers to do stupid things in python. But
I'm kind of a theroretician and it hurts me if I see that exactly that what
it should not be is proposed as the standard. And for the dicts: In my
private code-base I use a frozendict c-package I wrote.
@Collin: The notation used within settings.py isn't that important. But I
think in the moment the framework constructs the settings object all
sequences (might be generators as well) should be turned into tuples.
For the trailing-comma-problem: I notate every (globally available)
constant sequence in the pattern:
A = (
1,
2,
)
which is perfectly PEP-conformant and makes reodering elements manually
also more easy because you can cut'n'paste whole lines.
Am Montag, 19. Januar 2015 17:35:44 UTC+1 schrieb Florian Apolloner:
>
> On Monday, January 19, 2015 at 3:45:18 PM UTC+1, Andreas Kahnert wrote:
>>
>> I'm not talking about modifications inside the settings.py but in other
>> place. With lists, unexperienced devs might do things like: from
>> django.conf import settings; settings.TEMPLATE_DIRS[3] = '/my_tpls'; and
>> expect to work out good.
>>
>
> And with tuples they just do settings.TEMPLATE_DIRS =
> list(settings.TEMPLATE_DIRS) followed by your example. What I am trying to
> say is that a developer ignoring the docs will always run into issues, no
> matter how hard we try to prevent it.
>
> This is realy just a question of logic: lists are mutable - settings are
>> immutable; see the conflict?
>>
>
> Well, what is your suggestion for the dictionaries in the settings then ;)
> In the end it just doesn't matter if it's a list or a tuple -- you can
> "mutate" it anyways. For the functionality of Django it makes no difference
> if you altered the setting in place or just replace it -- stuff __will__
> break.
>
> Cheers,
> Florian
>
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