Python Programming for the Absolute Beginner, 3rd Edition

Download CD Content

Overview

You've seen how variables are a great way to access information, but as your programs grow in size and complexity, so can the number of your variables. Keeping track of all of them can become a lot of work. Therefore, in this chapter, you'll learn about the idea of sequences and meet a new type, called the tuple, which let's you organize and manipulate information in ordered groups. You'll also see how a type you've already encountered, the string, is really a sequence too. You'll also learn about a new kind of loop that's built just for working with sequences. Specifically, you'll learn how to do the following:

• Construct for loops to move through a sequence

• Use the range() function to create a sequence of numbers

• Treat strings as sequences

• Use tuples to harness the power of sequences

• Use sequence functions and operators

• Index and slice sequences