>>> import math
>>> math.log(100)
4.605170185988092
>>> 2*math.pi
6.283185307179586
>>> s = 'the imitation game'
>>> s.title()
'The Imitation Game'
>>> s.find(' ')
3
>>> s.index(' ')
3
>>> s.rfind(' ')
13
>>> s.replace('game', 'movie')
'the imitation movie'
>>> s
'the imitation game'
>>> s
'the imitation game'
>>> s = s[0:14] + 'movie'
>>> s
'the imitation movie'
>>> s.count(' ')
2
>>> s
'the imitation movie'
>>> s = s[4:13].upper()
>>> s
'IMITATION'
>>> %Run mymath.py
>>> circumference(1)
6.283185307179586
>>> circumference(2)
12.566370614359172
>>> %Run mymath.py
>>> absolute(-5)
5
>>> absolute(5)
5
>>>