comparing two lists

[Ladislav Andel]

I have learnt a lot from your example and used it for my purpose.
Thank you, it very helped me.
Lada

Peter Otten wrote:
> Ladislav Andel wrote:
>
>   
>> need to be stopped before deleting any instance from items.
>> So I need to call stopLoop method in the given item in items before it
>> gets removed.
>> If there is any addition to items it's quite easy to call
>> item.startLoop() method.
>>     
>
> Unless you want to rely on the __del__ method or introduce another
> complication (weak references) you have to be explicit:
>
> # untested
> # removing items
> db_items = set(Item(**d) for d in dblist)
> delenda = items - db_items
> for item in delenda:
>     item.stopLoop()
>     items.remove(item)
>
>   
>> (I use twisted but it should not make any difference):
>>     
>
> I've not worked with twisted, so I can't confirm that.
> I can imagine that they provide their own way to spell a finalizer...
>
> Peter
>