Django: "Import: cannot import name on_commit"

Question

I’m trying to run an application in Django, however, when using the command python2 manage.py runserver I have the following return:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 354, in execute
    django.setup()
  File "C:\Python27\lib\site-packages\django\__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Python27\lib\site-packages\django\apps\registry.py", line 85, in populate
    app_config = AppConfig.create(entry)
  File "C:\Python27\lib\site-packages\django\apps\config.py", line 116, in create
    mod = import_module(mod_path)
  File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module
    __import__(name)
  File "C:\Python27\lib\site-packages\django_cleanup\apps.py", line 9, in <module>
    from . import cache, handlers
  File "C:\Python27\lib\site-packages\django_cleanup\handlers.py", line 10, in <module>
    from django.db.transaction import on_commit
ImportError: cannot import name on_commit

I am using the following versions:

Python 2.7
Django 1.7.1

Answer 1

If you read the documentation of django.db.transaction.on_commit you will see that functionality has only been added in Django 1.9.

Remember to check if you are seeing the correct documentation, in your case the documentation of Django 1.7.