1 This is a sample doctest in a text file.

     2 

     3 In this example, we'll rely on a global variable being set for us

     4 already:

     5 

     6   >>> favorite_color

     7   'blue'

     8 

     9 We can make this fail by disabling the blank-line feature.

    10 

    11   >>> if 1:

    12   ...    print 'a'

    13   ...    print

    14   ...    print 'b'

    15   a

    16   <BLANKLINE>

    17   b