New submission from STINNER Victor:
Attached patch implements a finalizer for os.scandir() iterator type. The patch
also calls the new PyErr_ResourceWarning() function to be able to display in
the warning where the iterator was created (allocated) when tracemalloc is
enabled.
While it makes sense to pass an "open" socket to the logger of the
ResourceWarning warning for sockets (issue #26590), maybe we can close the
ScandirIterator *before* calling the logger?
Example:
---
import os
f = os.scandir('.')
f = None
---
Output:
---
$ ./python -X tracemalloc -Wd example.py
example.py:3: ResourceWarning: unclosed scandir iterator <posix.ScandirIterator
object at 0x7f21cdb15280>
f = None
Object allocated at (most recent call first):
File "example.py", lineno 2
f = os.scandir('.')
---
See also the issue #26590 "socket destructor: implement finalizer".
----------
messages: 262136
nosy: haypo, pitrou, serhiy.storchaka
priority: normal
severity: normal
status: open
title: os.scandir: implement finalizer (for ResourceWarning)
versions: Python 3.6
_______________________________________
Python tracker <[email protected]>
<http://bugs.python.org/issue26603>
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