#25830: Unnecessary migrations with Python3
----------------------------+--------------------------------------
Reporter: bronger | Owner: nobody
Type: Bug | Status: closed
Component: Migrations | Version: 1.8
Severity: Normal | Resolution: invalid
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by bmispelon):
* status: new => closed
* resolution: => invalid
Comment:
I think I got it.
In your `generate_permissions` function, you're iterating over a set. In
recent versions of Python, the iteration order of sets (and dictionaries)
is randomized and will change between separate runs.
Because of this, the order of you model's permissions is different every
time so the autodetector picks up that change.
I don't believe that's a bug in Django's code. Changing from a set to a
tuple in your code should fix the issue for you.
Thanks.
--
Ticket URL: <https://code.djangoproject.com/ticket/25830#comment:3>
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