Django NoModuleFoundError occurs only when adding a valid path to urls.py of my project folder-CodePudding

I have set up a Django project according to Victor Freitas' excellent post on production ready Django boilerplate here

# SIGP3A/Comps/categories/urls.py

from django.urls import path

from . import views

urlpatterns = [
    path('', views.categories, name='categories'),
]

See below my installed apps where categories is included. Note Comps is INSIDE main project folder and it is where I keep all my apps.

I am using local.py config which imports from base.py. Like I said, everything works BEFORE I start adding url paths.

I commented out everything related to django debug toolbar just to filter out a few things too while debuging it.

See below how categories is registered in apps.py:

from django.apps import AppConfig


class CategoriesConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'SIGP3A.Comps.categories'

I spent my morning investigating this with trials and errors only to find differing errors that led me even farther from a solution. Feeling at the point I don't know what I am doing any longer. I wish to follow this boilerplate that makes total sense to me, but I'm stuck thinking I should go back to my simpler, although not production-ready approach.

Here is the whole traceback:

(.venv) PS D:\HDD_Code\SIGP3A_chest\SIGP3A> py manage.py check
Traceback (most recent call last):
  File "D:\HDD_Code\SIGP3A_chest\SIGP3A\manage.py", line 22, in <module>
    main()
  File "D:\HDD_Code\SIGP3A_chest\SIGP3A\manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\__init__.py", line 446, in execute_from_command_line
    utility.execute()
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\__init__.py", line 440, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\base.py", line 414, in run_from_argv
    self.execute(*args, **cmd_options)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\base.py", line 460, in execute   
    output = self.handle(*args, **options)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\commands\check.py", line 76, in handle
    self.check(
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\management\base.py", line 487, in check     
    all_issues = checks.run_checks(
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\checks\registry.py", line 88, in run_checks 
    new_errors = check(app_configs=app_configs, databases=databases)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\checks\urls.py", line 14, in check_url_config
    return check_resolver(resolver)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\core\checks\urls.py", line 24, in check_resolver 
    return check_method()
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\urls\resolvers.py", line 480, in check
    for pattern in self.url_patterns:
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\utils\functional.py", line 49, in __get__        
    res = instance.__dict__[self.name] = self.func(instance)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\urls\resolvers.py", line 696, in url_patterns    
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\utils\functional.py", line 49, in __get__        
    res = instance.__dict__[self.name] = self.func(instance)
  File "D:\HDD_Code\SIGP3A_chest\.venv\lib\site-packages\django\urls\resolvers.py", line 689, in urlconf_module  
    return import_module(self.urlconf_name)
  File "C:\Users\fsoar\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
ModuleNotFoundError: No module named 'categories'

And here is the whole list of requirements in my virtual environment. For this job I decided to not create separated environments as it is experimental at this point.

asgiref==3.5.2
asttokens==2.0.5
backcall==0.2.0
black==22.6.0
certifi==2022.6.15
click==8.1.3
colorama==0.4.5
coverage==6.4.2
decorator==5.1.1
distlib==0.3.5
dj-database-url==1.0.0
Django==4.0.6
django-debug-toolbar==3.5.0
executing==0.9.1
factory-boy==3.2.1
Faker==13.15.1
filelock==3.7.1
flake8==5.0.3
gunicorn==20.1.0
ipython==8.4.0
isort==5.10.1
jedi==0.18.1
matplotlib-inline==0.1.3
mccabe==0.7.0
mypy-extensions==0.4.3
packaging==21.3
parso==0.8.3
pathspec==0.9.0
pickleshare==0.7.5
platformdirs==2.5.2
pluggy==1.0.0
prompt-toolkit==3.0.30
psycopg2==2.9.3
pure-eval==0.2.2
py==1.11.0
pycodestyle==2.9.0
pyflakes==2.5.0
Pygments==2.12.0
pyparsing==3.0.9
python-dateutil==2.8.2
python-decouple==3.6
pytz==2022.1
sentry-sdk==1.9.0
six==1.16.0
sqlparse==0.4.2
stack-data==0.3.0
toml==0.10.2
tomli==2.0.1
tox==3.25.1
traitlets==5.3.0
tzdata==2022.1
urllib3==1.26.11
virtualenv==20.16.2
wcwidth==0.2.5

I think I need to import something somewhere but I don't know exactly what, given that categories is already registered.

CodePudding user response：

You need to use the actual app name for Django to know where the urls.py file to include is:

# your installed app name
INSTALLED_APPS = [
    ...
    'SIGP3A.Comps.categories'
]

# your urls.py file
path('categories/', include('SIGP3A.Comps.categories.urls'))