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赵翩翩更加担心了，不停落泪。此剧主要讲述了关于法学院师生恋的爱情故事。3. Use your own contacts to find customers,9-12 Multiple Modules: Store User classes in one module and Privileges and Admin classes in another module. Create another file, create an Admin instance in it, and call the method show_privileges () on it to make sure everything is still running correctly. ?First of all, let's introduce the business: in the purchase process, you can select the color of the mobile phone and enter the purchase quantity. At the same time, there are two display areas in the page, which respectively display the color and quantity that the user has just selected. There is also a button that dynamically displays the next operation. We need to query the inventory corresponding to the mobile phone of this color. If the inventory quantity is less than the purchase quantity this time, the button will be disabled and the copy with insufficient inventory will be displayed. Otherwise, the button will be highlighted and can be clicked and displayed if the shopping cart is displayed.