ValueError: Unable to configure filter 'require_debug_false': Cannot resolve 'django.utils.log.CallbackFilter': No module named CallbackFilter

Question

I'm setting up a simple db using Django and I got the above error when running 'python manage.py syncdb'

Is this a problem in manage.py or my .db file? Suggestions for how to resolve?

EDIT: Adding full traceback

Traceback (most recent call last):

File "manage.py", line 14, in <module>
execute_manager(settings)
File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
utility.execute()
File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 252, in fetch_command
app_name = get_commands()[subcommand]
File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 101, in get_commands
apps = settings.INSTALLED_APPS
File "/Library/Python/2.7/site-packages/django/utils/functional.py", line 276, in __getattr__
self._setup()
File "/Library/Python/2.7/site-packages/django/conf/__init__.py", line 42, in _setup
self._wrapped = Settings(settings_module)
File "/Library/Python/2.7/site-packages/django/conf/__init__.py", line 139, in __init__
logging_config_func(self.LOGGING)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/config.py", line 776, in dictConfig
dictConfigClass(config).configure()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/config.py", line 562, in configure
'filter %r: %s' % (name, e))
ValueError: Unable to configure filter 'require_debug_false': Cannot resolve 'django.utils.log.CallbackFilter': No module named CallbackFilter

Answer 1

I had the same problem

Go to your settings.py and find the LOGGING settings

LOGGING = {

'version': 1,

'disable_existing_loggers': False,

'filters': {

    'require_debug_false': {

        '()': 'django.utils.log.CallbackFilter',

        'callback': lambda r: not DEBUG

    }

},

See the CallbackFilter there? Remove the whole 'filters' key. This happened because I tried to use the same settings.py file across 2 different Django versions. If you use djangoadmin.py startproject you get a valid settings.py file.

Answer 2

Please double check if the django version 1.3.1 you have is the most recent one, because this is a bug in Django.

To avoid such situations, I recommend to use virtualenv: How to create multiple Django environments using virtualenv

If you have the most recent version and still facing the issue, please update this bug: Ticket #16568 require_debug_false does not work as intended (backward incompatible)

The bug also has a simple solution:

Remove require_debug_false from global_settings.py (since it does

not work) and force everyone to copy/paste the default LOGGING snippet to their settings

Answer posted by django developer andreas_pelme here, this is not a bug and if correct version of django is installed, it should work fine.

~ $ mkvirtualenv t16568-regression
New python executable in t16568-regression/bin/python
Installing setuptools............done.
Installing pip...............done.
virtualenvwrapper.user_scripts creating /Users/andreas/.virtualenvs/t16568-regression/bin/predeactivate
virtualenvwrapper.user_scripts creating /Users/andreas/.virtualenvs/t16568-regression/bin/postdeactivate
virtualenvwrapper.user_scripts creating /Users/andreas/.virtualenvs/t16568-regression/bin/preactivate
virtualenvwrapper.user_scripts creating /Users/andreas/.virtualenvs/t16568-regression/bin/postactivate
virtualenvwrapper.user_scripts creating /Users/andreas/.virtualenvs/t16568-regression/bin/get_env_details
[t16568-regression] ~ $ pip install django==1.3.1
Downloading/unpacking django==1.3.1
  Downloading Django-1.3.1.tar.gz (6.5Mb): 6.5Mb downloaded
  Running setup.py egg_info for package django

Installing collected packages: django
  Running setup.py install for django
    changing mode of build/scripts-2.7/django-admin.py from 644 to 755

    changing mode of /Users/andreas/.virtualenvs/t16568-regression/bin/django-admin.py to 755
Successfully installed django
Cleaning up...
[t16568-regression] ~ $ cd code/
[t16568-regression] ~ $ django-admin.py startproject foo
[t16568-regression] ~ $ cd foo/
[t16568-regression] ~/foo $ python manage.py shell

In [1]: import django; django.get_version()
Out[1]: '1.3.1'