On Sun, 20 Nov 2005 11:05:53 +0800, Xiao Jianfeng wrote:
> I have some other questions:
>
> when "fh" will be closed?
When all references to the file are no longer in scope:
def handle_file(name):
fp = file(name, "r")
# reference to file now in scope
do_stuff(fp)
return fp
f = handle_file("myfile.txt)
# reference to file is now in scope
f = None
# reference to file is no longer in scope
At this point, Python *may* close the file. CPython currently closes the
file as soon as all references are out of scope. JPython does not -- it
will close the file eventually, but you can't guarantee when.
> And what shoud I do if I want to explicitly close the file immediately
> after reading all data I want?
That is the best practice.
f.close()
--
Steven.
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