Begin to Code with Python Made Easy For Beginners - python programming for beginners by khalil khalil

Author:khalil, khalil [khalil, khalil]
Language: eng
Format: epub
Publisher: UNKNOWN
Published: 2020-05-20T16:00:00+00:00

What you will learn

In the previous chapter, we discovered how to create genuinely useful objects. We saw how to use Python to create classes that can hold and manage data values and provide methods that allow programs to make use of them.

In this chapter, we’ll build on our class knowledge to learn how to build systems that work with large numbers of different, but related data items. We’ll also explore how we can connect objects via the methods they expose. Alongside all this, we’ll discover more features and functions of Python, including sets.

Fashion Shop application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .374

Create aFashionShop component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .410

Design with classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .421

Python sets ..........................................................422

What you have learned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .434 373

Fashion Shop application

Your lawyer client is very happy with her Time Tracker application. She’s been showing it to her friends, and they’ve been very impressed—particularly a friend who runs a fashion shop and has been looking for an application to help her manage her stock. She sells a large range of clothing items and needs help tracking inventory. Stock arrives from suppliers, and she enters the details in the system. When she sells an item, she wants to remove it from stock. She would also like a way of producing reports that will show her how many of each item she has in stock. She’s keen to get your help, and she’s offering discounted prices, or even free clothing, in exchange.

Free fashion sounds like an interesting idea, so you sit down with your new client and talk about what she wants to do. She shows you her stock folder, which you can see in Figure 11-1 .

Figure 11-1 Fashion shop stock file

She tells you that each item she receives from her suppliers has a unique stock reference that she uses to track that item. She has a large binder with a page per stock item. When she gets something she hasn’t stocked before, such as a new style of dress, she creates a new page for that type of item and adds it to the folder.

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