Pablo Galindo Salgado <pablog...@gmail.com> added the comment: When I run your script I do not see any file descriptor associated with the queue when
subprocess.call(["ls", "-la", "/proc/%d/fd" % os.getpid()]) is executed. This is my output if I just execute your program: starting 3728 Starting 'external_application' exit status 10 the 'external_application' application finished with exit status '10'... Note the file descriptor #4 below total 0 dr-x------ 2 pablogsal pablogsal 0 Mar 18 12:17 . dr-xr-xr-x 9 pablogsal pablogsal 0 Mar 18 12:17 .. lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:17 0 -> /dev/pts/1 lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:17 1 -> /dev/pts/1 lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:17 2 -> /dev/pts/1 lr-x------ 1 pablogsal pablogsal 64 Mar 18 12:17 5 -> /dev/urandom This is my output if I remove the call to "del queue": starting 3892 Starting 'external_application' exit status 10 the 'external_application' application finished with exit status '10'... Note the file descriptor #4 below total 0 dr-x------ 2 pablogsal pablogsal 0 Mar 18 12:18 . dr-xr-xr-x 9 pablogsal pablogsal 0 Mar 18 12:18 .. lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:18 0 -> /dev/pts/1 lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:18 1 -> /dev/pts/1 lrwx------ 1 pablogsal pablogsal 64 Mar 18 12:18 2 -> /dev/pts/1 l-wx------ 1 pablogsal pablogsal 64 Mar 18 12:18 4 -> 'pipe:[104568]' lr-x------ 1 pablogsal pablogsal 64 Mar 18 12:18 5 -> /dev/urandom So at least on my side "del queue" is having the desired effect. Notice that calling > del queue does not destroy the object but just decrement in 1 the number of references to the object. To force collection of any possible cycles once you have destroyed all references on your side you can call > import gc > gc.collect() ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33081> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
