Chapter 01
Open for Business
Plan the duka app, set up the project and write the first menu your shopkeeper will see.
Build a shopkeeper's app for a real Kenyan duka: track stock, record sales and print receipts. Your program saves its data with files and JSON so it remembers everything between days — then runs a boss report on demand. Assumes basic Python.
Has finished at least one project
Follow the course from the first idea to the finished project.
Plan the duka app, set up the project and write the first menu your shopkeeper will see.
Meet the dictionary: keep every product's price in one place and look any of them up instantly.
Nest dictionaries so each product carries its price and stock together — a real shop's stock book, in code.
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