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> On 31 Aug 2019, at 15:41, Manfred Lotz <ml_news at posteo.de> wrote:
> 
> When you say COULD this sounds like it is a matter of luck. My thinking
> was that USUALLY the file will be closed after the statement because
> then the file handle goes out of scope.

It all depends on the way any python implementation does its garbage collection. The file is closed as a side effect of deleting the file object to reclaiming the memory of the file object.

At the start of python 3 people where suprised when files and other resources where not released at the same time that python 2 released them.

Barry