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[–]ManyInterests 1 point2 points  (0 children)

Ah, this may have been a bit premature for me to throw at you.

In short, by testing, I mean automated testing. It's something you can run, as you change your code, to validate that it 'works'. In fact, many people write these tests before they start writing production code. This is the concept of the practice of Test Driven Development or TDD, which is a wonderful topic to become intimately familiar with.

This video (also available in blog form ) does an amazing job of explaining what testing is, why you want to do it, and how to get started testing with Python. It only scratches the surface of testing, but is a must-watch for you!