New submission from STINNER Victor:
The webbrowser opens almost all browsers in background mode, it looks like only
Elinks is not opened in this mode.
Problem: the webbrowser doesn't read the exit status of the browser, and so
create zombi process. On Python 3.6, the subprocess module now emits a
ResourceWarning in this case (issue #26741).
For example, the following script shows a zombi process ("<defunc>"):
---
import webbrowser, os
b = webbrowser.get("firefox")
b.open("https://bugs.python.org/issue26741";)
b = None
os.system("ps ax|grep firefox")
input("press ENTER when firefox exited")
os.system("ps ax|grep firefox")
---
I guess that Python should use os.fork() somehow to fix this issue.
Another option is to hack the Popen object to not display the warning, but I
don't think that it's a safe option.
See also the issue #27068 "Add a detach() method to subprocess.Popen", but I
don't think that it is directly related to background processes run by
webbrowser.
----------
messages: 265939
nosy: haypo, martin.panter
priority: normal
severity: normal
status: open
title: webbrowser creates zombi processes in the background mode
versions: Python 3.5, Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue27069>
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