Yes, MOSS does that. I have been TA'ing a first year Python Programming course since beginning of this year; what you describe is the most common trick used by

Yes, MOSS does that. I have been TA'ing a first year Python Programming course since beginning of this year; what you describe is the most common trick used by students---even though they have been told time and again that this will be detected. As an example, MOSS picked up 91% similarity---between two students---for one of the module files. # Student 1 at1 = input("Attempt 1:\n") at2 = input("Attempt 2:\n") at3 = input("Attempt 3:\n") maxi.append(max(eval(at1),eval(at2),eval(at3))) # Student 2 attempt1 = input("Attempt 1:\n") attempt2 = input("Attempt 2:\n") attempt3 = input("Attempt 3:\n") maximums.append(max(eval(attempt1),eval(attempt2),eval(attempt3))) I find it interesting that MOSS does a one-on-one comparison for each student.