####
# 1.py
# erase the hashtags to run the code!

#print 1 + 1 

#print 7.1 * 4000

#a = 9
#print a**2

#print 100/50
#print 100/51

#phi = (1 + 5**(1/2.)) / 2

#e = (1 + 1/100000.)**100000

#One way to estimate pi is to use the following infinite series

#index = 1
#pi = 0.
#pie = 4.
#while abs(pi-pie) > .00001:
#    pie = pi
#    pi = pi + (-1)**(index + 1)/(2.*index-1)
#    index = index + 1
#print 4*pi

#Or we can do this
#import math
#print math.pi