This math function rounds a number up or down to the nearest whole number. code example
Example: how to round a decimal to the nearest whole number in python
>>> import math
>>> math.ceil(1.2)
2
>>> math.ceil(2)
2
>>> math.ceil(-0.5)
0
>>> import math
>>> math.ceil(1.2)
2
>>> math.ceil(2)
2
>>> math.ceil(-0.5)
0