Slide 19
Slide 19 text
19
>>> def double(x):
... return x * 2
...
>>> double(3)
6
>>> double(3.5)
7.0
>>> double(3j+4)
(8+6j)
>>> from fractions import Fraction
>>> double(Fraction(1, 5))
Fraction(2, 5)
>>> double('Spam')
'SpamSpam'
>>> double([1, 2, 3])
[1, 2, 3, 1, 2, 3]