Why does the doctest fail?

Question

I made a class in Python to perform some basic operations.

class perform(object):

    def add(self, first, second):
        """Adds two numbers
        >>>perform().add(1, 2)
        3
        Also adds string
        >>>perform().add('some', 'thing')
        'something'
        """
        return first+second

I don't understand why does the doctest failed for the add function.

Note that is covered in the docs: https://docs.python.org/2/library/doctest.html#how-are-docstring-examples-recognized — jonrsharpe, Jul 12 '15 at 15:11

score 2 · Answer 1 · answered Jul 12 '15 at 14:57

2

You need to add some spaces and a blank line into docstring

class perform(object):
    def add(self, first, second):
        """Adds two numbers
        >>> perform().add(1, 2)
        3

        Also adds string
        >>> perform().add('some', 'thing')
        'something'
        """
        return first+second

answered Jul 12 '15 at 14:57

Konstantin

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@HimanshuMishra https://docs.python.org/2/library/doctest.html#how-are-docstring-examples-recognized doctest will look for a blank line or a line starting with `>>>` to determine when expected output ends – Konstantin Jul 12 '15 at 15:02

Why does the doctest fail?

1 Answers1