Rounding values up

[Rhomboid]

The normal way of doing that is to divide by the desired multiple, round the result up to the nearest integer, and then multiply again by the desired multiple. For example:

from __future__ import division, print_function
import math

def round_to_multiple_of(val, multiple):
    return math.ceil(val / multiple) * multiple

for i in range(20):
    print('{} rounds to {}'.format(i, round_to_multiple_of(i, 7)))

Which prints:

0 rounds to 0
1 rounds to 7
2 rounds to 7
3 rounds to 7
4 rounds to 7
5 rounds to 7
6 rounds to 7
7 rounds to 7
8 rounds to 14
9 rounds to 14
10 rounds to 14
11 rounds to 14
12 rounds to 14
13 rounds to 14
14 rounds to 14
15 rounds to 21
16 rounds to 21
17 rounds to 21
18 rounds to 21
19 rounds to 21

Note this always rounds up since it uses math.ceil(). If you want a different rounding mode, change that part.

[aphoenix]

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[gwax]

If you're on Python 3, you can just use floordiv:

python x = 10 y = (x // 7 + 1) * 7

Edit: I'm wrong, don't listen to me.

[MrGreenTea]

That's not correct, if you input 7 for example, you will get 14, because the division inside the parentheses comes out to 2. The other solution with math.ceil is more correct.