djangovirtualenvdjango-countries

Django fails upon server startup trying to import module ("doesn't look like a module path")


Seems I'm following the instructions, but somehow Django doesn't see django_countries as an app.

Error:

System check identified no issues (0 silenced).
February 18, 2021 - 23:56:01
Django version 3.1.4, using settings 'django_project.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/utils/module_loading.py", line 13, in import_string
    module_path, class_name = dotted_path.rsplit('.', 1)
ValueError: not enough values to unpack (expected 2, got 1)

The above exception was the direct cause of the following exception:
(WSGI stuff...)

settings.py:

INSTALLED_APPS = [
    'django_countries',
    'registration.apps.RegistrationConfig',
     .....

Project tree:

.
├── db.sqlite3
├── django_project
│   ├── asgi.py
│   ├── __init__.py
│   ├── __pycache__
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── manage.py
├── myapp
│   ├── admin.py
│   ├── apps.py
│   ├── forms.py
│   ├── __init__.py
│   ├── migrations
│   ├── models.py
│   ├── __pycache__
│   ├── static
│   ├── templates
│   ├── tests.py
│   ├── urls.py
│   └── views.py
├── readme.rst
├── registration
│   ├── admin.py
│   ├── apps.py
│   ├── __init__.py
│   ├── migrations
│   ├── models.py
│   ├── __pycache__
│   ├── static
│   ├── templates
│   ├── tests.py
│   ├── urls.py
│   └── views.py
├── requirements.txt
├── static
│   └── project
├── templates
│   └── project.html
└── venv
    ├── bin
    ├── include
    ├── lib
    ├── lib64 -> lib
    └── pyvenv.cfg

I installed it with pip, using virtualenv. My virtual is active, I can check it with pip list, as well a import django-countries with the same interpreter I use to run django (python manage.py runserver). And at any rate, within django Models I can clearly import & use django-countries (pycharm).

What's up?


Solution

  • I think what I really should do is delete this question. But then one has to own up to one's idiocy, so....

    Apparently I had initially did this, and never noticed:

    MIDDLEWARE = [
        .... middlewares....
        'django_countries', ]
    

    I got the error, so thinking it was a venv issue & re-installed my virtual environement for this project. Then I, correctly, added it to the installed apps, not the middleware section:

    INSTALLED_APPS = [
        'django_countries',
        'registration.apps.RegistrationConfig',
         .....
    

    But since Django's process to import middleware was still trying to import something that definitely wasn't a middleware and had the wrong syntax for that import, it failed with this full stack trace upon start:

    xception in thread django-main-thread:
    Traceback (most recent call last):
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/utils/module_loading.py", line 15, in import_string
        module_path, class_name = dotted_path.rsplit('.', 1)
    ValueError: not enough values to unpack (expected 2, got 1)
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/servers/basehttp.py", line 45, in get_internal_wsgi_application
        return import_string(app_path)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/utils/module_loading.py", line 19, in import_string
        module = import_module(module_path)
      File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
      File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
      File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
      File "<frozen importlib._bootstrap_external>", line 790, in exec_module
      File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/django_project/wsgi.py", line 16, in <module>
        application = get_wsgi_application()
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/wsgi.py", line 13, in get_wsgi_application
        return WSGIHandler()
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/handlers/wsgi.py", line 127, in __init__
        self.load_middleware()
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 40, in load_middleware
        middleware = import_string(middleware_path)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/utils/module_loading.py", line 17, in import_string
        raise ImportError("%s doesn't look like a module path" % dotted_path) from err
    ImportError: django_countries doesn't look like a module path
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "/usr/lib/python3.9/threading.py", line 954, in _bootstrap_inner
        self.run()
      File "/usr/lib/python3.9/threading.py", line 892, in run
        self._target(*self._args, **self._kwargs)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/utils/autoreload.py", line 53, in wrapper
        fn(*args, **kwargs)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/management/commands/runserver.py", line 138, in inner_run
        handler = self.get_handler(*args, **options)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/contrib/staticfiles/management/commands/runserver.py", line 27, in get_handler
        handler = super().get_handler(*args, **options)
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/management/commands/runserver.py", line 65, in get_handler
        return get_internal_wsgi_application()
      File "/run/media/fv/hdd-1/PROJECTS/django-receipes/django_template/venv/lib/python3.9/site-packages/django/core/servers/basehttp.py", line 47, in get_internal_wsgi_application
        raise ImproperlyConfigured(
    django.core.exceptions.ImproperlyConfigured: WSGI application 'django_project.wsgi.application' could not be loaded; Error importing module.