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One of the central duties of a computer is to control what happens when predetermined conditions are met. When you click on a folder, you expect it to open; when you type on the keyboard, you expect the text to mirror your keystrokes. Writing code for applications or games is no different—they both need to behave in a certain way in one state, and in another when conditions change. In programming terms, this is called control flow, which is apt because it controls the flow of how code is executed in different scenarios.

In addition to working with control statements, we'll be taking a hands-on look at collection data types. Collections are a category of types that allow multiple values, and groupings of values, to be stored in a single variable. We'll break the chapter down into the following topics:

• Selection statements
• Working with array, dictionary, and list collections
• Iteration statements with...