Python3 - How do I import a class from another file

[Chris Angelico]

On Wed, Dec 11, 2019 at 1:53 AM Antoon Pardon <antoon.pardon at vub.be> wrote:
> What would you want to happen in the following case:
>
>    foo1 = Bar()
>    foo2 = foo1
>    del foo1
>
> Should the object be cleaned up now or not?
>

TBH both are plausible, and to a Python programmer it's immediately
obvious that "foo1.close()" should close foo2 as well. Logic doesn't
preclude either of them. Imagine if the base object type had a
__destroy__() method that would dereference everything the object
referenced, clear its __dict__ (if it has one), and causes all
attribute access (including methods) to raise DestroyedObjectError. It
would be absolutely plausible to call foo1.__destroy__() and have the
object actually be destroyed.

I know this is plausible because I know of languages that work both
ways - that destroying an object actually destroys it immediately, or
that explicitly deleting a name binding leaves the object till it's
not referenced anywhere. And if there are languages working both ways,
it seems a little presumptive to heap scorn on a language designer for
either of those options.

ChrisA