how to make a class return integer instance

Question

I want my class to return an Integer instance like when you override __str__ But Integer type. I don't understand why the following code wont work.

class A:
    def __init__(self):
        global x
        x=5
    def __new__(cls):
        return  x       
print(A())
#it says: NameError: global name 'x' is not defined

this code is working for me..prints <__main__.A instance at 0x01E4A800> — sundar nataraj
– sundar nataraj, Commented May 8, 2014 at 7:53
I am using python 3.3 and i just checked it again. won't work. — Confuzzeled David
– Confuzzeled David, Commented May 8, 2014 at 7:54
@ConfuzzeledDavid It's because __new__ is called before __init__. Plus whatever you are trying to do is pure evil. What's the point in overriding __new__ like you do? Just use a function. — freakish
– freakish, Commented May 8, 2014 at 7:59
You mention __str__ so are you after the same for __int__? Or - are you trying to subclass/otherwise implement your own int like object? — Jon Clements
– Jon Clements, Commented May 8, 2014 at 8:06

pbacterio · Accepted Answer · 2014-05-08 08:01:42Z

5

>>> class A:
    def __new__(cls):
        return 5
>>> A()
5

answered May 8, 2014 at 8:01

pbacterio

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1 Comment

Confuzzeled David Over a year ago

Thanks. That's exactly what i wanted.

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