Why doesn't my finaliser run here?

[Oscar Benjamin]

On 4 Sep 2016 13:27, "Steve D'Aprano" <steve+python at pearwood.info> wrote:
>
> Why doesn't __del__ run here?
>
>
> class Eggs(object):
>     def __new__(cls):
>         instance = object.__new__(cls)
>         print("instance created successfully")
>         return instance
>     def __init__(self):
>         print("self definitely exists:", self)
>         raise Exception
>     def __del__(self):
>         print("deleting", repr(self))
>
>
> And an example:
>
>
> py> e = Eggs()
> instance created successfully
> self definitely exists: <__main__.Eggs object at 0xb7bf21ec>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "<stdin>", line 8, in __init__
> Exception

Maybe the Exception traceback holds a reference to the object. Also try the
example outside of interactive mode since that can hold references.

--
Oscar