round up a number python code example

Example 1: how to round a number down in python

>>> import math

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

Example 2: python round down

>>>import math
>>> math.floor(1.6)
1
>>> math.floor(2)
2
>>> math.floor(3.9)
3

Example 3: how to round a number up in python

>>> import math

>>> math.ceil(3.2) # round up
4

Example 4: python round without math

(int(10*x-0.5)+1) / 10.0