Don't worry, we won't spam you as a consequence. You'll be asked to register as a user on the site first, but this is painless and straightforward. To see how CodeRunner quizzes behave, try taking the Python3 demo quiz.
They can then correct their code and resubmit, typically for a small penalty. It is normally used in Moodle's adaptive quiz mode students paste in their code in answer to each programming question and get to see their test-case results immediately. It is intended primarily for use in computer programming courses although it can be used to grade any question for which the answer is text. CodeRunner is a free open-source question-type plug-in for Moodle that can run program code submitted by students in answer to a wide range of programming questions in many different languages.
