what does num mean in python 3?

Question

how do i use 'num' in python 3?

Here is some code:

x=3
num=17
print(num % x)

...the output will be 2.
My question is how does it come to that answer/output? THANKS

Answer 1

num is a variable like x
num % x is equal to 17 % 3.
The nearest multiple of 3 from 17 and smaller than 17 is 15, so the remainder of the division of 17 by 3 is 17-15 so 2

Answer 2

% = modulo which basically is "how much will be left over after the nearest Full multiplication with 3 that results less than 17"
5*3 = 15
17-15=2

if you did it with 18 it would be 0 since 6*3 = 18

if you did for example 10%6
6*1 = 6
10-6=4

or you could think it with division since multiplication and division walk hand in hand

Answer 3

А на русском?