Django: doesn't declare an explicit app_label and isn't in an application in INSTALLED_ APPS

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本文解决了一个常见的Django项目错误：Modelclassdb.base_model.BaseModeldoesn'tdeclareanexplicitapp_label问题。通过在settings.py的INSTALLED_APPS中添加应用，如'db'，可以轻松解决此问题。

出现异常:

RuntimeError: Model class db.base_model.BaseModel doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.

解决方案:

在项目setting文件中INSTALLED_APPS添加如下代码即可

INSTALLED_APPS = [
    "db",  # 注册名为db的应用即可
]

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