how to round up numbers in python3 code example

Example 1: how to round a number down in python

>>> import math

>>> math.floor(3.9) # round down
3

Example 2: how to round whole numbers in python

#To round decimals
round(123.4)
#To select the significant number you whish to round to
#add extra parameter
round(12.456, 2)
#To round whole numbers
round(1236, -1)