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You are viewing this exercise within a course of which you are not a member. You won't show up on your teacher's scoresheets until you register.
Warning! It seems that you are using Dodona within another webpage, so not everything may work properly. Let your teacher know so that he can solve the problem by adjusting a setting in the learning environment. In the meantime, you can click this link to open Dodona in a new window.
This window allows you to run Python code without installing a thing. The code you write here is not automatically submitted to Dodona. This feature is still in full development, so we're happy to hear about your suggestions and issues using the contact form.