When you're programming, you need to ensure that your program will validate user inputs and give good error messages, and that it will react gracefully if a required file is missing or your network is down. Exceptions (using the try and except commands) are provided to help you program in this way in Python. Here's a trainee on one of our Python classes during a practical session. He's looking to ruggedize a piece of code so that it will react well in the even of unexpected user inputs.

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Associated topic - Python - Dictionaries

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