Is there a modulo function in the Python math library?
Isn't 15 % 4, 3? But 15 mod 4 is 1, right?
7 Answers
There's the % sign. It's not just for the remainder, it is the modulo operation.
you can also try divmod(x, y) which returns a tuple (x // y, x % y)
>>> 15 % 4 3 >>> The modulo gives the remainder after integer division.
mod = a % b
This stores the result of a mod b in the variable mod.
And you are right, 15 mod 4 is 3, which is exactly what python returns:
>>> 15 % 4 3 a %= b is also valid.
Why don't you use % ?
print 4 % 2 # 0 I don't think you're fully grasping modulo. a % b and a mod b are just two different ways to express modulo. In this case, python uses %. No, 15 mod 4 is not 1, 15 % 4 == 15 mod 4 == 3.
A = [3, 1, 2, 4] for a in A: print(a % 2) output:
1 1 0 0 
