Fixing error with single input in integral grader

mitodl / mitx-grading-library

The MITx Grading Library, a python grading library for edX

BSD 3-Clause "New" or "Revised" License

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Closed jolyonb closed 5 years ago

jolyonb commented 5 years ago

If only a single input is given by a student in an integralgrader, we need to wrap that input in a list.