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 mainexecute_from_command_line(sys.argv)File "mysite\venv\Lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_lineutility.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 setupapps.populate(settings.INSTALLED_APPS)File "mysite\venv\Lib\site-packages\django\apps\registry.py", line 91, in populateapp_config = AppConfig.create(entry)^^^^^^^^^^^^^^^^^^^^^^^File "mysite\venv\Lib\site-packages\django\apps\config.py", line 90, in createmodule = 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_importFile "<frozen importlib._bootstrap>", line 1178, in _find_and_loadFile "<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",
]