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The block of code that does a task for us is called a , just to make clear that what we are talking about is a function rather than some other kind of Python expression.
Functions are an important concept in programming, and we only mention them at the outset to give newcomers a sense of the power and creativity of programming.
Once the data is downloaded to your machine, you can load some of it using the Python interpreter.
The Collections tab on the downloader shows how the packages are grouped into sets, and you should select the line labeled book to obtain all data required for the examples and exercises in this book.
This chapter is divided into sections that skip between two quite different styles.
In the "computing with language" sections we will take on some linguistically motivated programming tasks without necessarily explaining how they work.
Instead, you can come up with your own name for a task, like "lexical_diversity" or "percentage", and associate it with a block of code.
Now you only have to type a short name instead of one or more complete lines of Python code, and you can re-use it as often as you like.