On 2019-09-01 16:46, Barry wrote:
On 31 Aug 2019, at 15:41, Manfred Lotz <ml_n...@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.
Is that true?
I thought that it was because other implementations of Python, such as
Jython and IronPython, don't use reference counting, so files and other
resources aren't necessarily released as soon as an object loses its
last reference, and, moreover, it's not required to do so by the
language definition.
Adding the 'with' statement added determinism.
See PEP 343 -- The "with" Statement
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