Unit tests are a way to make sure your code is correct. Python comes with a built-in unit test framework that makes it easy to write a lot of tests for your software. In fact, many engineers will write a series of tests before they begin coding. This approach is called “test driven development” and is very effective.
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Our Python Tutorials will help you learn Python quickly and thoroughly. We start with "Hello World" and then move on to data structures (sets, lists, tuples and dictionaries). Next we'll cover classes, and give a variety of in-depth examples and applications.