Python3 - How do I import a class from another file
Am 11.12.2019 11:01 schrieb Greg Ewing:
> On 11/12/19 7:47 am, R.Wieser wrote:
>> what happens when the reference becomes zero: is the __del__
>> method called directly (as I find logical), or is it only called when
>> garbage collector actually removes the instance from memory (which
>> thinks what happens) ?
> In CPython, these are the same thing. As soon as the reference
> count becomes zero, the __del__ method is called
> *and* the object is removed from memory.
Not necessarily. Let's be more precise: The resources used by the object
are handed back to memory management (marked as free for re-use).
> In a Python implementation that doesn't use reference counts,
> using "del" on the last reference to an object probably isn't
> going to do anything to the object.
It does exactly the same thing: It tells the memory management subsystem
that the instance's resources may be re-used.