Collection
The Big Idea This chapter introduces functions—the most important tool for organizing code—to create reusable blocks for adding and displaying products, and combines them with a while loop to build...
The Big Idea This chapter gives our application a persistent memory by teaching it how to save the inventory data to a file before it closes and load it back...
The Big Idea This chapter introduces the dictionary, a powerful Python data structure that uses key-value pairs, allowing us to upgrade our inventory data from fragile, index-based lists to a...
The Big Idea This chapter completes our core application logic by adding the final two essential operations of data management: updating an existing product’s details and deleting a product from...
The Big Idea This chapter introduces professional error handling, making our application robust and user-friendly by using try...except blocks to anticipate and manage invalid user input gracefully. Roadmap The Fragility...