Django -- 报错

通过终端命令来创建新的 app 时报错

执行命令: python manage.py startapp mysite04

具体报错内容如下:

Traceback (most recent call last):
  File "mysite\manage.py", line 22, in <module>
    main()
  File "mysite\manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "mysite\venv\Lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "mysite\venv\Lib\site-packages\django\core\management\__init__.py", line 377, in execute  
    django.setup()
  File "mysite\venv\Lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "mysite\venv\Lib\site-packages\django\apps\registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
                 ^^^^^^^^^^^^^^^^^^^^^^^
  File "mysite\venv\Lib\site-packages\django\apps\config.py", line 90, in create
    module = import_module(entry)
             ^^^^^^^^^^^^^^^^^^^^
  File "python3_11\Lib\importlib\__init__.py", line 126, in import_module  
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1142, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'mysite04'

原因: settings.py 文件中 INSTALLED_APPS 中有的 mysite04没有声明

INSTALLED_APPS = [
  	"mysite04",
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
]