test_mc

test_mc(correct, msgs, state=None)

Test multiple choice exercise.

Test for a MultipleChoiceExercise. The correct answer (as an integer) and feedback messages are passed to this function.

Parameters:

• correct (int) – the index of the correct answer (should be an instruction). Starts at 1.
• msgs (list(str)) – a list containing all feedback messages belonging to each choice of the
• The list should have the same length as the number of instructions. (student.) –

test_mc(correct, msgs)

Multiple choice exercises are straightforward to test. Use test_mc() to provide tailored feedback for both the incorrect options, as the correct option. Below is the code for a multiple choice exercise example, with an SCT that uses test_mc:

--- type:MultipleChoiceExercise lang:python xp:50 skills:2
## The author of Python

Who is the author of the Python programming language?

*** =instructions
- Roy Co
- Ronald McDonald
- Guido van Rossum

*** =hint
Just google it!

*** =sct
```{python}
test_mc(correct = 3, 
        msgs = ["That's someone who makes soups.",
                "That's a clown who likes burgers.",
                "Correct! Head over to the next exercise!"])
```

The first argument of test_mc(), correct, should be the number of the correct answer in this list. Here, the correct answer is Guido van Rossum, corresponding to 3. The msgs argument should be a list of strings with a length equal to the number of options. We encourage you to provide feedback messages that are informative and tailored to the (incorrect) option that people selected. Make sure to correctly order the feedback message such that it corresponds to the possible answers that are listed in the instructions tab. Notice that there’s no need for success_msg() in multiple choice exercises, as you have to specify the success message inside test_mc(), along with the feedback for incorrect options.