AttributeError：'module'对象没有属性'TabularInLine'

Question

这段代码中可能出现的问题我试图在电子商务页面中添加Cart并返回属性错误

from django.contrib import admin
from .models import Cart, CartItem

class CartItemInLine(admin.TabularInline):
    model = CartItem

class CartAdmin(admin.ModelAdmin):
    inlines = [
        CartItemInLine
    ]
    class Meta:
        model = Cart

admin.site.register(Cart, CartAdmin)