#35187: Django 5.0+ doesn't work with pyc files only
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Reporter: Marcus Hoffmann | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 5.0
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 |
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Since upgrading django to version 5.0.1 (5.0 untested currently) in
[https://buildroot.org/ buildroot] (an embedded rootfs build toolkit)
django stopped working correctly in the buildroot default configuration.
By default buildroot compiles all installed python modules to .pyc files
and removes the .py files.
There's been some discussion around this but the conclusion seems to be,
that this is an officially supported way of running cpython:
https://github.com/python/cpython/issues/95827
Here's a test run output of creating a new django project and invoking
manage.py from it inside a minmal buildroot created image:
https://gitlab.com/buildroot.org/buildroot/-/jobs/6148209453#L181
Creating the project works but manage.py fails with:
{{{
Traceback (most recent call last):
File "/opt/testsite/./manage.py", line 22, in <module>
main()
File "/opt/testsite/./manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/usr/lib/python3.12/site-
packages/django/core/management/__init__.py", line 442, in
execute_from_command_line
File "/usr/lib/python3.12/site-
packages/django/core/management/__init__.py", line 416, in execute
File "/usr/lib/python3.12/site-packages/django/__init__.py", line 24, in
setup
File "/usr/lib/python3.12/site-packages/django/apps/registry.py", line
91, in populate
File "/usr/lib/python3.12/site-packages/django/apps/config.py", line
193, in create
File "/usr/lib/python3.12/importlib/__init__.py", line 90, in
import_module
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in
_find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 994, in exec_module
File "<frozen importlib._bootstrap>", line 488, in
_call_with_frames_removed
File "/usr/lib/python3.12/site-
packages/django/contrib/admin/__init__.py", line 2, in <module>
File "/usr/lib/python3.12/site-
packages/django/contrib/admin/filters.py", line 12, in <module>
File "/usr/lib/python3.12/site-
packages/django/contrib/admin/options.py", line 33, in <module>
File "/usr/lib/python3.12/site-
packages/django/contrib/auth/__init__.py", line 96, in <module>
File "/usr/lib/python3.12/site-
packages/django/views/decorators/debug.py", line 50, in decorator
File "/usr/lib/python3.12/inspect.py", line 1264, in getsourcelines
File "/usr/lib/python3.12/inspect.py", line 1093, in findsource
OSError: could not get source code
}}}
This seems to specifically fail somewhere in loading contrib.auth, if I
remove (in a local test) both the 'django.contrib.admin' and
'django.contrib.auth' apps from the list of installed apps then manage.py
starts to work correctly.
--
Ticket URL: <https://code.djangoproject.com/ticket/35187>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
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