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Exercise

Check the return type

Python's flexibility around data types is usually cited as one of the benefits of the language. It can occasionally cause problems though if incorrect data types go unnoticed. You've decided that in order to make sure your code is doing exactly what you want it to do, you will explicitly check the return types of all of your functions and make sure they are what you expect them to be. To do that, you are going to create a decorator that checks that the return type of the decorated function is correct.

Note: assert(condition) is a function that you can use to test whether something is true. If condition is True, this function doesn't do anything. If condition is False, this function raises an error. The type of error that it raises is called an AssertionError.

Instructions 1/2
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  • Start by completing the returns_dict() decorator so that it raises an AssertionError if the return type of the decorated function is not a dictionary.
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