[Django] #36698: isinstance() arg 2 must be a type, a tuple of types, or a union when using Oracle DB

[Django]

#36698: isinstance() arg 2 must be a type, a tuple of types, or a union when using
Oracle DB
-------------------------------------+-------------------------------------
Reporter: drussca | Type: Bug
Status: new | Component: Database
| layer (models, ORM)
Version: 5.2 | Severity: Normal
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
I have a Django project that uses and Oracle DB. Django version: 5.2.7.

I've had to modify .../django/db/backends/oracle/base.py to make the setup
work as I was getting:

{{{
File "/home/.../lib/python3.12/site-
packages/django/db/backends/oracle/base.py", line 441, in __init__
elif isinstance(param, (Database.Binary, datetime.timedelta)):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: isinstance() arg 2 must be a type, a tuple of types, or a union
}}}

After this most things work, EXCEPT when I try to do something like this:

{{{
someobjects =
someclass.somerelatedobject.filter(effdate__lte=reference_date)
someobjectssubset = someobjects.filter(expirdate__gte=reference_date)
otherobjectssubset = someobjects .filter(rlexpirdate__isnull=True)
}}}

For this I still get the isinstance() arg 2 must be a type, a tuple of
types, or a union error.
--
Ticket URL: <https://code.djangoproject.com/ticket/36698>
Django <https://code.djangoproject.com/>
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[Django]

#36698: isinstance() arg 2 must be a type, a tuple of types, or a union when using
Oracle DB
-------------------------------------+-------------------------------------

Reporter: drussca | Owner: (none)
Type: Bug | Status: new
Component: Database layer | Version: 5.2
(models, ORM) |
Severity: Normal | Resolution:

Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Comment (by Clifford Gama):

Duplicate of #36646. The issue was fixed for Django 5.2.8. In the meantime
you can downgrade oracledb to a version less than 3.4.0.
--
Ticket URL: <https://code.djangoproject.com/ticket/36698#comment:1>

[Django]

#36698: isinstance() arg 2 must be a type, a tuple of types, or a union when using
Oracle DB
-------------------------------------+-------------------------------------
Reporter: drussca | Owner: (none)

Type: Bug | Status: closed

Component: Database layer | Version: 5.2
(models, ORM) |

Severity: Normal | Resolution: duplicate

Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Clifford Gama):

* resolution: => duplicate
* status: new => closed

--
Ticket URL: <https://code.djangoproject.com/ticket/36698#comment:2>