Python lets you set default values for function arguments, which is super convenient. But when those default values are mutable (like lists or dictionaries), you're walking into a sneaky bug trap.

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This post explains how to install Python on Linux, Windows, or Mac. We will also set up an editor so that you can start coding!

This article is more than 8 years old. Python was named by coding school Coding Dojo as the most in-demand coding language.