Issue 13222: Erroneous unclosed file warning (original) (raw)

Issue13222

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/57431

classification

process

Created on 2011-10-19 18:53 by giampaolo.rodola, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (3)
msg145936 - (view)	Author: Giampaolo Rodola' (giampaolo.rodola) *	Date: 2011-10-19 18:53
/opt/python3.2/lib/python3.2/site-packages/psutil/_pslinux.py:389: ResourceWarning: unclosed file <_io.FileIO name=7 mode='rb'> return [x for x in f.read().split('\x00') if x] I get this while running tests. The method in question is defined as such: @wrap_exceptions def get_process_cmdline(self): f = open("/proc/%s/cmdline" % self.pid) try: # return the args as a list return [x for x in f.read().split('\x00') if x] finally: f.close() ...therefore, I'm closing the file object (in the finally block).
msg145938 - (view)	Author: Antoine Pitrou (pitrou) *	Date: 2011-10-19 19:06
Since the "name" is 7, it's certainly another file than the one opened in: f = open("/proc/%s/cmdline" % self.pid) It could be that you called open on the result of os.pipe(), or perhaps you used a subprocess and didn't call communicate() or close() on it.
msg145992 - (view)	Author: Giampaolo Rodola' (giampaolo.rodola) *	Date: 2011-10-19 23:31
Indeed you were right. Thanks.