Test an AI Coding Tutor with a Bug You Can Explain

A coding tutor can produce a correct answer while teaching very little. To compare learning tools, give each one a small bug and ask for a hint before allowing a complete solution.

Prepare a controlled task

Use a short loop that skips an item or accesses an index outside a list. Write down the expected output yourself. Keep the language and prompt identical across candidates, so differences in the task do not dominate the comparison.

The tutor checklist at EasyGuides suggests examining explanations, practice and debugging behavior. Turn those categories into observations: did the tool ask what you expected, identify the relevant concept and leave room for another attempt?

Check the explanation independently

For a Python exercise, use the official Python tutorial to check the underlying language behavior. Run the corrected program and vary one input. A response that sounds confident still needs to match what the interpreter does.

Measure what you can do afterward

Close the chat and solve a nearby problem without copying. Explain why the boundary condition failed in your own words. If you cannot, ask for a smaller exercise or a clearer explanation. Keep notes about that learning step rather than ranking tutors by how quickly they reveal the finished code.

Try an empty input and a one-item input as well. Ask the tutor to predict each result before running the code. Boundary cases reveal whether its explanation describes the program or merely repeats the corrected snippet.