#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2009 Doug Hellmann All rights reserved.
     #
     """
     """
     #end_pymotw_header
     
     import fractions
     import math
     
     print 'PI       =', math.pi
     
     f_pi = fractions.Fraction(str(math.pi))
     print 'No limit =', f_pi
     
     for i in range(1, 100, 5):
         limited = f_pi.limit_denominator(i)
         print '{0:8} = {1}'.format(i, limited)