how to round whole numbers in python

1>>>import math
2>>> math.floor(1.6)
31
4>>> math.floor(2)
52
6>>> math.floor(3.9)
73

1#To round decimals
2round(123.4)
3#To select the significant number you whish to round to
4#add extra parameter
5round(12.456, 2)
6#To round whole numbers
7round(1236, -1)

1round(n, ndigits) # round(1.123456789,5) --> 1.12346

1>>> import math
2
3>>> math.ceil(3.2) # round up
44

1(int(10*x-0.5)+1) / 10.0
2