我编写了新模型，进行了迁移，迁移了模型，但忘记了在admin.py文件中注册模型。迁移后，我启动了服务器并出现以下错误：
Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\base.py", line 392, in check
all_issues = self._run_checks(
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\base.py", line 382, in _run_checks
return checks.run_checks(**kwargs)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\checks\registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\checks\urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\checks\urls.py", line 23, in check_resolver
return check_method()
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\urls\resolvers.py", line 407, in check
for pattern in self.url_patterns:
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\urls\resolvers.py", line 588, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\functional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\urls\resolvers.py", line 581, in urlconf_module
return import_module(self.urlconf_name)
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\ecommerce\ecommerce\urls.py", line 27, in <module>
path('',include(('foodapp.urls', 'foodapp'), namespace='foodapp')),
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\urls\conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 779, in exec_module
File "<frozen importlib._bootstrap_external>", line 916, in get_code
File "<frozen importlib._bootstrap_external>", line 846, in source_to_code
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ValueError: source code string cannot contain null bytes
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
utility.execute()
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\commands\runserver.py", line 60, in execute
super().execute(*args, **options)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\base.py", line 369, in execute
output = self.handle(*args, **options)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\commands\runserver.py", line 95, in handle
self.run(**options)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\core\management\commands\runserver.py", line 102, in run
autoreload.run_with_reloader(self.inner_run, **options)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 599, in run_with_reloader
start_django(reloader, main_func, *args, **kwargs)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 584, in start_django
reloader.run(django_main_thread)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 299, in run
self.run_loop()
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 305, in run_loop
next(ticker)
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 345, in tick
for filepath, mtime in self.snapshot_files():
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 361, in snapshot_files
for file in self.watched_files():
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 260, in watched_files
yield from iter_all_python_module_files()
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 105, in iter_all_python_module_files
return iter_modules_and_files(modules, frozenset(_error_files))
File "C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\venv\lib\site-packages\django\utils\autoreload.py", line 141, in iter_modules_and_files
resolved_path = path.resolve(strict=True).absolute()
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\pathlib.py", line 1172, in resolve
s = self._flavour.resolve(self, strict=strict)
File "C:\Users\Bilawal Hassan\AppData\Local\Programs\Python\Python38\lib\pathlib.py", line 200, in resolve
return self._ext_to_normal(_getfinalpathname(s))
OSError: [WinError 123] The filename, directory name, or volume label syntax is incorrect: '<frozen importlib._bootstrap>'
在收到此错误后，我删除了最新的migration.py文件，但在运行服务器时仍遇到上述异常。
答案 0 :(得分：1)
您的问题在第27行的文件C:\Users\Bilawal Hassan\PycharmProjects\Ecommerce Website\ecommerce\ecommerce\urls.py中：
path('',include(('foodapp.urls', 'foodapp'), namespace='foodapp')),
貌似Django无法找到foodapp应用，无法检查该应用是否已安装，您是否有错字，等等
答案 1 :(得分：0)
删除数据库，然后使用命令python manage.py showmigrations 如果不进行迁移，则使用迁移命令，否则删除迁移文件和数据库文件。然后创建migrations.py并在其中包含 init .py。然后运行迁移命令。它将解决。 / p>