RFC: Proposal: Deterministic Object Destruction (Posting On Python-List Prohibited)

ooomzay at gmail.com ooomzay at gmail.com
Fri Mar 2 09:32:03 EST 2018


On Friday, March 2, 2018 at 1:59:02 AM UTC, Lawrence D’Oliveiro wrote:
> On Friday, March 2, 2018 at 1:03:08 PM UTC+13, ooo... at gmail.com wrote:
> > On Thursday, March 1, 2018 at 11:51:50 PM UTC, Lawrence D’Oliveiro wrote:
> >> On Friday, March 2, 2018 at 12:39:01 PM UTC+13, ooo... at gmail.com wrote:
> >>>
> >>> class RAIIFileAccess():
> >>> '''File Access-like Resource using [RAII] idiom'''
> >>> ...
> >>> def __del__(self): 
> >>> low_level_file_close(self.handle) # fictitious function
> >> 
> >> This may be OK for files opening for reading, not so good for writing.
> > 
> > Please could you explain the issue you perceive with writing?
>> Compare the difference in behaviour between
>> f = open("/dev/full", "w")
> f.write("junk")
> f.close()
>> and
>> f = open("/dev/full", "w")
> f.write("junk")
> f = None
>> Should there be a difference in behaviour?

Could you please be very explicit about why you think the PEP would be more suitable when reading a file than when writing a file? You have responded with another question that I just can't see the relevance of (yet).


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