http://www.practicepython.org/exercise/2014/01/29/01-character-input.html

characterInput.py

        # -*- coding: utf-8 -*-

# Calc age

name = raw_input("Name >>> ")
age = int(raw_input("Age >>> "))

year = 2016

while(age < 101):
    balAge = 100 - age
    print balAge
    break

print "Year you will be turning 100 years is %d" % (year + balAge)