#31418: ValueError when FileBasedCache is used in Python 3.7
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Reporter: mastizada | Owner: nobody
Type: Bug | Status: closed
Component: Core (Cache system) | Version: 2.2
Severity: Release blocker | 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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Old description:
> Using FileBasedCache in Django 2.2.12 with Python 2.7.3 is giving
> ValueError: unsupported pickle protocol: 5
>
> Checking the highest protocol version for pickle using
> `pickle.HIGHEST_PROTOCOL` is giving 4, so the protocol 5 is not
> available.
>
> Line that is causing the error: `filebased.py` in `_is_expired` at line
> 146, `exp = pickle.load(f)`.
>
> Using Python 3.8.0 solves the problem.
New description:
Using FileBasedCache in Django 2.2.12 with Python 3.7.3 is giving
ValueError: unsupported pickle protocol: 5
Checking the highest protocol version for pickle using
`pickle.HIGHEST_PROTOCOL` is giving 4, so the protocol 5 is not available.
Line that is causing the error: `filebased.py` in `_is_expired` at line
146, `exp = pickle.load(f)`.
Using Python 3.8.0 solves the problem.
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Comment (by mastizada):
Indicated the wrong python version
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Ticket URL: <https://code.djangoproject.com/ticket/31418#comment:4>
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