django学习中遇到一个错误

Question

RuntimeError: Model class users.models.UserProfile doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. 

之前有类似的回答，不过照着做依然有这个报错。请各位大神帮帮忙！

补充：发现这个错误在 from users.models import VerifyCode 时就会出现，users.models下有UserProfile、VerifyCode2个类。

users.models import VerifyCode会导致错误，但是from apps.users.models import VerifyCode就无错误，sys.path.insert(0, os.path.join(BASE_DIR, 'apps'))已添加，INSTALLED_APPS也已经设置，很奇怪。

Answer 1

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Answer 2

你用是在apps目录建的app吗