django程序无法打开因为缺失模块

在django程序的启动过程中无法找到app1的模块但我已经加入了呀是怎么回事


PS E:\mysize> python manage.py runserver
Watching for file changes with StatReloader
Performing system checks...

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\threading.py", line 926, in _bootstrap_inner      
    self.run()
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\commands\runserver.py", line 118, in inner_run
    self.check(display_num_errors=True)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\base.py", line 423, in check
    databases=databases,
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\checks\registry.py", line 76, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\checks\urls.py", line 13, in check_url_config
    return check_resolver(resolver)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\checks\urls.py", line 23, in check_resolver
    return check_method()
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\urls\resolvers.py", line 416, in check
    for pattern in self.url_patterns:
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\urls\resolvers.py", line 602, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\site-packages\django\urls\resolvers.py", line 595, in urlconf_module
    return import_module(self.urlconf_name)
  File "C:\Users\r9000p\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "E:\mysize\mysize\urls.py", line 17, in <module>
    from mysize.app1 import views
ModuleNotFoundError: No module named 'mysize.app1'

这个是urls.py的内容


from django.urls import path
from mysize.app1 import views
urlpatterns = [
    # path('admin/', admin.site.urls),
    path('app/', views.app_run),
]

这个是setting.py内部的配置


INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app1.apps.App1Config',
]

这个是views.py内部的内容


from django.shortcuts import render, HttpResponse


# Create your views here.

def app_run(request):
    return HttpResponse('欢迎光临')

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