运行django报错doesn't declare an explicit app_label and isn't in an application in INSTALL_APPS

Django模型导入问题

最新推荐文章于 2025-08-24 22:16:04 发布

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本文详细解析了在Django项目中遇到的一个常见错误：当在settings文件中添加搜索路径后，使用PyCharm自动引入模块时出现的路径不正确问题。文章提供了具体的错误信息和解决方法，帮助读者理解如何正确地从项目同名包的子应用目录中导入模型。

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运行django服务时提示，

XXX doesn't declare an explicit app_label and isn't in an application in INSTALL_APPS

原因：因为我在settings文件中添加了一行搜索路径，而使用pycharm自动引入时的路径并不正确

#apps为子应用目录
sys.path.insert(0,os.path.join(BASE_DIR,'apps'))

解决方法：

from 项目同名包.子应用目录.子应用名称.models import model名

#改为下方的代码

from .models import model名

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Django报错 Model doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS

smh2208的博客

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环境： Django2.0.1 Xadmin0.6.0 项目app结构：配置文件settins.py中关于多app的配置： sys.path.insert(0,os.path.join(BASE_DIR,'apps')) INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.aut...

关于DjangoRuntimeError: Model class doesn't declare an explicit app_label

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运行环境 PyCharm 2017.1 Django 2.0.1 python 3.6.1 使用相对路径引用Models模块 from .models import * 在同时存在多个apps的情况下，有机会报错 RuntimeError: Model class app_anme.models.Ad doesn't declare an explicit app_label...

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【Django异常报错】持续记录，欢迎提供问题

黎明总是如期而至

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虽然我们已经很小心，但是django在日常使用中还是会出现一些问题，总是有一些报错是少部分人碰到的，而且都不是很好处理。本篇博客是一个记录，也作为收集，愿我们共同进步。通过整理这些bug，总有能够帮到你我他，或者提供一些灵感。

doesn‘t declare an explicit app_label and isn‘t in an application in INSTALLED_APPS

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属性，以指定该模型类所属的应用程序：比如：app_lable='app'其中app是子应用的名字。在settings中有设置找到apps的路径，就不要加了哦，问题就可以解决。列表中，请检查模型类是否正确地定义在应用程序的models.py文件中。如果以上步骤都没有解决问题，尝试在模型类中显式地指定。设置是否包含了该应用程序。应用程序名称已包含在。

Model class easy_thumbnails.models.Source doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.

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根据引用[1][2][3]中的描述，这通常是因为模型没有在`INSTALLED_APPS`中注册的应用内，或者模型类没有显式声明`app_label`。###问题分析1.**`easy_thumbnails`是什么？**-`easy_thumbnails`是一个用于生成缩略图的...

Django2.1遇到 app_label and isn't in an application in INSTALLED_APPS 错误

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Django在应用列表中添加新的应用时有时会出错 INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', ...

Watching for file changes with StatReloader Performing system checks... Exception in thread django-main-thread: Traceback (most recent call last): File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.1008.0_x64__qbz5n2kfra8p0\Lib\threading.py", line 1041, in _bootstrap_inner self.run() ~~~~~~~~^^ File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.1008.0_x64__qbz5n2kfra8p0\Lib\threading.py", line 992, in run self._target(*self._args, **self._kwargs) ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\utils\autoreload.py", line 64, in wrapper fn(*args, **kwargs) ~~^^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\management\commands\runserver.py", line 134, in inner_run self.check(display_num_errors=True) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\management\base.py", line 486, in check all_issues = checks.run_checks( app_configs=app_configs, ...<2 lines>... databases=databases, ) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\checks\registry.py", line 88, in run_checks new_errors = check(app_configs=app_configs, databases=databases) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\checks\urls.py", line 16, in check_url_config return check_resolver(resolver) File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\core\checks\urls.py", line 26, in check_resolver return check_method() File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\urls\resolvers.py", line 531, in check for pattern in self.url_patterns: ^^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\utils\functional.py", line 47, in __get__ res = instance.__dict__[self.name] = self.func(instance) ~~~~~~~~~^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\urls\resolvers.py", line 718, in url_patterns patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) ^^^^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\utils\functional.py", line 47, in __get__ res = instance.__dict__[self.name] = self.func(instance) ~~~~~~~~~^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\urls\resolvers.py", line 711, in urlconf_module return import_module(self.urlconf_name) File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.1008.0_x64__qbz5n2kfra8p0\Lib\importlib\__init__.py", line 88, in import_module return _bootstrap._gcd_import(name[level:], package, level) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen importlib._bootstrap>", line 1387, in _gcd_import File "<frozen importlib._bootstrap>", line 1360, in _find_and_load File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 935, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 1026, in exec_module File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "C:\Users\17710\membership_system\membership_system\urls.py", line 25, in <module> path('members/', include('members.urls')), ~~~~~~~^^^^^^^^^^^^^^^^ File "C:\Users\17710\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\django\urls\conf.py", line 39, in include urlconf_module = import_module(urlconf_module) File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.1008.0_x64__qbz5n2kfra8p0\Lib\importlib\__init__.py", line 88, in import_module return _bootstrap._gcd_import(name[level:], package, level) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen importlib._bootstrap>", line 1387, in _gcd_import File "<frozen importlib._bootstrap>", line 1360, in _find_and_load File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 935, in _load_unlocked File "<frozen 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