Python for Kids, 2nd Edition

BPython’s Built-in Functions

Python has a well-stocked box of programming tools, including a large number of functions and modules that are ready-made for you to use. These built-in tools can make writing programs a lot easier.

As you read in Chapter 7, modules need to be imported before they can be used. Python’s built-in functions don’t need to be imported first; they’re available as soon as the Python Shell starts. In this appendix, we’ll look at some of the more useful built-in functions, and then focus on one: the open function, which lets you open files to read and write from them.

Using Built-in Functions

Let’s look at some of the built-in ...