Opened 4 years ago
Last modified 4 years ago
#32450 closed Bug
"TypeError: cannot pickle" when applying | operator to a Q object — at Initial Version
| Reported by: | Daniel Izquierdo | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 3.1 |
| Severity: | Normal | Keywords: | |
| Cc: | Tom Forbes | Triage Stage: | Ready for checkin |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
Using a reference to a non-pickleable type of object such as dict_keys in a Q object makes the | operator fail:
>>> from django.db.models import Q
>>> Q(x__in={}.keys())
<Q: (AND: ('x__in', dict_keys([])))>
>>> Q() | Q(x__in={}.keys())
Traceback (most recent call last):
...
TypeError: cannot pickle 'dict_keys' object
Even though this particular example could be solved by doing Q() | Q(x__in={}) it still feels like doing using .keys() should work.
I can work on a patch if there's agreement that this should not crash.
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