#33960: `python manage.py migrate` causes `ValueError: too many values to unpack
(expected 2)`
-------------------------------------+-------------------------------------
Reporter: | Owner: nobody
Aristotelis Mikropoulos |
Type: Bug | Status: new
Component: Core | Version: 4.1
(Management commands) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
Creating a fresh project and app in a fresh virtual environment, then
adding the app in `INSTALLED_APPS` (either bare name, or
`appname.apps.AppnameConfig`), and then running `python manage.py migrate`
causes:
{{{
$ python manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
Applying auth.0001_initial...Traceback (most recent call last):
File "manage.py", line 22, in <module>
main()
File "manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/__init__.py", line 446, in
execute_from_command_line
utility.execute()
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/__init__.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/base.py", line 402, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/base.py", line 448, in execute
output = self.handle(*args, **options)
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/base.py", line 96, in wrapped
res = handle_func(*args, **kwargs)
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/core/management/commands/migrate.py", line 349, in handle
post_migrate_state = executor.migrate(
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/db/migrations/executor.py", line 135, in migrate
state = self._migrate_all_forwards(
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/db/migrations/executor.py", line 167, in
_migrate_all_forwards
state = self.apply_migration(
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/db/migrations/executor.py", line 255, in apply_migration
migration_recorded = True
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/db/backends/sqlite3/schema.py", line 39, in __exit__
self.connection.check_constraints()
File "/home/indy/Desktop/env/lib/python3.8/site-
packages/django/db/backends/sqlite3/base.py", line 289, in
check_constraints
for column_name, (
ValueError: too many values to unpack (expected 2)
}}}
`relations` referenced in lines 289-292 of `db/backends/sqlite3/base.py`
{{{
for column_name, (
referenced_column_name,
referenced_table_name,
) in relations:
}}}
contains `{'permission_id': ('id', 'auth_permission'), 'group_id': ('id',
'auth_group')}`, so it makes sense to cause the `ValueError`.
Ubuntu 16.04
Python 3.8
Django 4.1
I don't change any settings (so, sqlite3), don't define any models, don't
do any other changes.
--
Ticket URL: <https://code.djangoproject.com/ticket/33960>
Django <https://code.djangoproject.com/>
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