导入方法中的序列化程序：

# models.py
# no from .serializers import TenantSerializer

class Tenant(models.Model):

    # model fields

    def save(self, *args, **kwargs):
        from .serializers import TenantSerializer

        _ = super().save(*args, **kwargs)
        data = TenantSerializer(self).data
        # do something
        return _

# serializers.py
from .models import Tenant

class TenantSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tenant
        fields = '__all__'

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在“models.py“和“serializers.py“之间循环导入所导致的错误，当两个或多个模块尝试相互导入时会发生这种情况。
在本例中，models.py正在从serializers.py导入TenantSerializer，serializers.py正在从“models.py”导入“Tenant”
要解决这个问题，您可以在model.py的保存函数中导入TenantSerializer：

from .serializers import TenantSerializer

class Tenant(models.Model):

    # model fields

    def save(self, *args, **kwargs):
        from .serializers import TenantSerializer  # Move import inside the function
        _ = super().save(*args, **kwargs)
        data = TenantSerializer(self).data
        # do something        
        return _

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我希望这对你有帮助。