#23112: Field.get_choices tries to index an iterable
-------------------------------------+-------------------------------------
Reporter: bernie_sumption | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.7-rc-2
(models, ORM) | Resolution:
Severity: Release blocker | Triage Stage: Accepted
Keywords: | Needs documentation: 0
Has patch: 1 | Patch needs improvement: 0
Needs tests: 0 | UI/UX: 0
Easy pickings: 0 |
-------------------------------------+-------------------------------------
Comment (by zsiciarz):
I got bitten by this bug too (talked about it yesterday with Baptiste).
Here's a traceback from my project which used to work on RC1, breaks on
RC2.
{{{
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/core/management/__init__.py", line 385, in
execute_from_command_line
utility.execute()
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/core/management/__init__.py", line 354, in execute
django.setup()
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/__init__.py", line 21, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/apps/registry.py", line 115, in populate
app_config.ready()
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/contrib/admin/apps.py", line 22, in ready
self.module.autodiscover()
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/contrib/admin/__init__.py", line 23, in autodiscover
autodiscover_modules('admin', register_to=site)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/utils/module_loading.py", line 74, in autodiscover_modules
import_module('%s.%s' % (app_config.name, module_to_search))
File
"/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/importlib/__init__.py",
line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1584, in _gcd_import
File "<frozen importlib._bootstrap>", line 1565, in _find_and_load
File "<frozen importlib._bootstrap>", line 1532, in
_find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 584, in _check_name_wrapper
File "<frozen importlib._bootstrap>", line 1022, in load_module
File "<frozen importlib._bootstrap>", line 1003, in load_module
File "<frozen importlib._bootstrap>", line 560, in
module_for_loader_wrapper
File "<frozen importlib._bootstrap>", line 868, in _load_module
File "<frozen importlib._bootstrap>", line 313, in
_call_with_frames_removed
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/allauth/socialaccount/admin.py", line 12, in <module>
class SocialAppForm(forms.ModelForm):
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/forms/models.py", line 284, in __new__
opts.help_texts, opts.error_messages)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/forms/models.py", line 210, in fields_for_model
formfield = f.formfield(**kwargs)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/db/models/fields/__init__.py", line 1063, in formfield
return super(CharField, self).formfield(**defaults)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/db/models/fields/__init__.py", line 822, in formfield
defaults['choices'] = self.get_choices(include_blank=include_blank)
File "/home/zbigniewsiciarz/v/bazawiedzy/lib/python3.3/site-
packages/django/db/models/fields/__init__.py", line 733, in get_choices
named_groups = self.choices and isinstance(self.choices[0][1], (list,
tuple))
TypeError: 'itertools._tee' object is not subscriptable
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/23112#comment:7>
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