[Python] How to properly round-up half float numbers?

I am facing a strange behavior of the round() function:

for i in range(1, 15, 2):
n = i / 2
print(n, "=>", round(n))


This code prints:

0.5 => 0
1.5 => 2
2.5 => 2
3.5 => 4
4.5 => 4
5.5 => 6
6.5 => 6


I expected the floating values to be always rounded up, but instead, it is rounded to the nearest even number.

Why such behavior, and what is the best way to get the correct result?

I tried to use the fractions but the result is the same.

Continue reading...