Basic file operation questions
Jeff Shannon
jeff at ccvcorp.com
Tue Feb 8 15:49:36 EST 2005
Marc Huffnagle wrote:
> When you read a file with that method, is there an implied close() call
> on the file? I assume there is, but how is that handled?
>
[...]
>>> for line in file(...):
>>> # do stuff
As I understand it, the disk file will be closed when the file object
is garbage collected. In CPython, that will be as soon as there are
no active references to the file; i.e., in the above case, it should
happen as soon as the for loop finishes. Jython uses Java's garbage
collector, which is a bit less predictable, so the file may not be
closed immediately. It *will*, however, be closed during program
shutdown if it hasn't happened before then.
Jeff Shannon
Technician/Programmer
Credit International
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