~azzar1/unity/add-show-desktop-key

ivle-marks, ivle.worksheet.utils: Fixed Divide-by-zero exception if there are
0 mandatory exercises in a worksheet - gives everyone 0 marks.

added added

removed removed

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# allowed to skip 1 in 5 questions and still get 'full marks'.

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# Hence we divide by 16, essentially making 16 percent worth

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# 1 star, and 80 or above worth 5.

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percent_int = (100 * mand_done) / mand_total

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if mand_total > 0:

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percent_int = (100 * mand_done) // mand_total

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else:

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# Avoid Div0, just give everyone 0 marks if there are none available

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percent_int = 0

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# percent / 16, rounded down, with a maximum mark of 5

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max_mark = 5

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mark = min(percent_int // 16, max_mark)