[FIXED] How to return a default attribute for a class' instance?

Issue

I have a class with the following structure:

class Example:
    def __init__(self, value, foo):
        self.value = value
        self.foo = foo
        self.bar = self.modify_stuff(value, foo)

    def modify_stuff(self, value, foo):
        """ some code """
        pass

I want to create an instance of the class, and then be able to refer to value directly, like this:

ex = Example(3, 'foo')
ans = 5 + ex

Instead of:

ans = 5 + ex.value

How can I do this?

Solution

Rewrite the add and radd:

class Example:
    def __init__(self, value):
        self.value = value

    def __add__(self, other):
        if isinstance(other, Example):
            return self.value + other.value

        return self.value + other

    def __radd__(self, other):
        if isinstance(other, Example):
            return self.value + other.value

        return self.value + other


print(Example(3) + 5)
print(Example(4) + Example(2))

# 8
# 6

Answered By - maya

Answer Checked By - David Goodson (PHPFixing Volunteer)