{"id":9678,"library":"django-nine","title":"Django Nine","description":"django-nine is a lightweight utility library for Django that provides consistent methods for checking Django and Python versions, as well as abstracting user model access for cross-version compatibility. The current version is 0.2.7. Its release cadence is very slow, with the last update in late 2022.","status":"maintenance","version":"0.2.7","language":"en","source_language":"en","source_url":"https://github.com/barseghyanartur/django-nine/","tags":["django","versioning","compatibility","utility"],"install":[{"cmd":"pip install django-nine","lang":"bash","label":"Install stable version"}],"dependencies":[{"reason":"Used for robust version comparison, added as a dependency in 0.2.7.","package":"packaging","optional":false},{"reason":"This is a peer dependency; django-nine provides utilities for Django projects, but does not install Django itself.","package":"Django","optional":false}],"imports":[{"note":"The installed package is `django-nine` but the top-level import name is `nine`.","wrong":"from django_nine import versions","symbol":"versions","correct":"from nine import versions"},{"note":"The installed package is `django-nine` but the top-level import name is `nine`.","wrong":"from django_nine import user","symbol":"user","correct":"from nine import user"}],"quickstart":{"code":"from nine import versions\nfrom nine import user\nimport django\n\nprint(f\"Current Django version: {django.get_version()}\")\n\nif versions.DJANGO_GTE_1_7:\n    print(\"Django version is 1.7 or greater.\")\n\nif versions.DJANGO_GTE_2_0:\n    print(\"Django version is 2.0 or greater.\")\n\n# Example of getting user model for cross-version compatibility\n# (Requires Django to be configured, typically inside a Django project)\n# from django.conf import settings\n# settings.configure() # Only for standalone script, not a real Django project\n# try:\n#    User = user.get_user_model()\n#    print(f\"User model: {User._meta.label}\")\n# except Exception as e:\n#    print(f\"Could not get user model: {e}\")","lang":"python","description":"This quickstart demonstrates how to use `django-nine` to check the Django version and access the user model. The `versions` module provides boolean constants for easy version comparisons."},"warnings":[{"fix":"Always use `from nine import ...` for imports.","message":"The PyPI package is `django-nine`, but the Python import name is `nine`. Attempting to import `django_nine` will result in a `ModuleNotFoundError`.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Ensure your project uses Python 3.7+ and a modern Django version (e.g., Django 2.2+).","message":"As of version 0.2.7, `django-nine` officially dropped support and testing for Python 2.x and older Python 3 versions (3.4, 3.5, 3.6), as well as very old Django versions. While the code might still function on some of these, it's no longer guaranteed.","severity":"breaking","affected_versions":"0.2.7 and later"},{"fix":"Explicitly install Django alongside `django-nine` (e.g., `pip install django django-nine`).","message":"`Django` is a peer dependency, meaning `django-nine` expects Django to be installed in your environment, but it does not install Django for you. If Django is not installed, the utilities will not function correctly.","severity":"gotcha","affected_versions":"All versions"}],"env_vars":null,"last_verified":"2026-04-17T00:00:00.000Z","next_check":"2026-07-16T00:00:00.000Z","problems":[{"fix":"Change your import statement from `import django_nine` or `from django_nine import ...` to `import nine` or `from nine import ...`.","cause":"Incorrect import statement; the package is installed as `django-nine` but imported as `nine`.","error":"ModuleNotFoundError: No module named 'django_nine'"},{"fix":"Ensure `packaging` is installed: `pip install packaging` or reinstall `django-nine` to pick up its dependencies: `pip install --upgrade django-nine`.","cause":"The `packaging` dependency was introduced in `django-nine` 0.2.7. If you installed an older version and upgraded Python/Django without properly reinstalling, or if pip resolution failed, `packaging` might be missing.","error":"ModuleNotFoundError: No module named 'packaging'"},{"fix":"Check the `django-nine` documentation or source code for available constants, and ensure you have an updated version of `django-nine` if looking for newer Django version constants. For example, `DJANGO_GTE_2_0` is available, but `DJANGO_GTE_4_0` might only be present in very recent versions (or not at all if the library hasn't updated).","cause":"You are attempting to access a version constant (e.g., `DJANGO_GTE_3_0`) that is not available in your installed `django-nine` version, or you have a typo in the constant name.","error":"AttributeError: module 'nine.versions' has no attribute 'DJANGO_GTE_X_Y'"}]}