How do you round UP a number?

How does one round a number UP in Python?

I tried round(number) but it rounds the number down. Example:

round(2.3) = 2.0 

and not 3, as I would like.

The I tried int(number + .5) but it round the number down again! Example:

int(2.3 + .5) = 2

The ceil (ceiling) function:

import math
print(int(math.ceil(4.2)))