完整報錯如下:

(python3.7) appleyuchi@ubuntu19:mysite_qingyun$ python manage.py runserver 10071Watching for file changes with StatReloader
Performing system checks...

Exception in thread django-main-thread:
Traceback (most recent call last):
? File "/usr/lib/python3.7/threading.py", line 926, in _bootstrap_inner
? ? self.run()
? File "/usr/lib/python3.7/threading.py", line 870, in run
? ? self._target(*self._args, **self._kwargs)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
? ? fn(*args, **kwargs)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
? ? self.check(display_num_errors=True)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/management/base.py", line 395, in check
? ? include_deployment_checks=include_deployment_checks,
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/management/base.py", line 382, in _run_checks
? ? return checks.run_checks(**kwargs)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/checks/registry.py", line 72, in run_checks
? ? new_errors = check(app_configs=app_configs)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/checks/urls.py", line 13, in check_url_config
? ? return check_resolver(resolver)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/core/checks/urls.py", line 23, in check_resolver
? ? return check_method()
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/urls/resolvers.py", line 407, in check
? ? for pattern in self.url_patterns:
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/utils/functional.py", line 48, in __get__
? ? res = instance.__dict__[self.name] = self.func(instance)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/urls/resolvers.py", line 588, in url_patterns
? ? patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/utils/functional.py", line 48, in __get__
? ? res = instance.__dict__[self.name] = self.func(instance)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/urls/resolvers.py", line 581, in urlconf_module
? ? return import_module(self.urlconf_name)
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/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 "/home/appleyuchi/桌面/基于Django的電子商務設計/Ebusiness/工作_增刪改查２/mysite_qingyun/mysite/urls.py", line 26, in <module>
? ? from cmdb import views
? File "/home/appleyuchi/桌面/基于Django的電子商務設計/Ebusiness/工作_增刪改查２/mysite_qingyun/cmdb/views.py", line 3, in <module>
? ? from cmdb import models
? File "/home/appleyuchi/桌面/基于Django的電子商務設計/Ebusiness/工作_增刪改查２/mysite_qingyun/cmdb/models.py", line 4, in <module>
? ? class UserInfo (models.Model):
? File "/home/appleyuchi/.virtualenvs/python3.7/lib/python3.7/site-packages/django/db/models/base.py", line 115, in __new__
? ? "INSTALLED_APPS." % (module, name)
RuntimeError: Model class cmdb.models.UserInfo doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.

?

?

解決方案:
?

mysite/settings.py的INSTALLED_APPS如下

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

其中最后一行中的cmdb要與app名字一致．

CmdbConfig要與cmdb/apps.py中的

apps.py中的類名一致

總結

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