[ python-Bugs-1199282 ] subprocess _active.remove(self) self not in list _active

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Bugs item #1199282, was opened at 2005-05-10 18:24
Message generated for change (Comment added) made by atila-cheops
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: cheops (atila-cheops)
Assigned to: Peter Åstrand (astrand)
Summary: subprocess _active.remove(self) self not in list _active

Initial Comment:
I start a subprocess in a seperate thread (25 concurrent 
threads)
in some of the threads the following error occurs
 
Exception in thread Thread-4:
Traceback (most recent call last):
  File "C:\Python24\lib\threading.py", line 442, in 
__bootstrap
    self.run()
  File "upgrade.py", line 45, in run
    returncode = p.wait()
  File "C:\Python24\lib\subprocess.py", line 765, in wait
    _active.remove(self)
ValueError: list.remove(x): x not in list
 
this is the code that starts the subprocess and where I 
wait for the result
 
p = subprocess.Popen('command',                              stdin=None, 
stdout=subprocess.PIPE,                              stderr=subprocess.STDOUT, 
universal_newlines=True)
returncode = p.wait()
errormessage = p.stdout.readlines()

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>Comment By: cheops (atila-cheops)
Date: 2005-09-19 09:29

Message:
Logged In: YES 
user_id=1276121

I noticed this bug under windows
to reproduce the bug, I attached the script I use, but this 
needs input, I tried with a simpler example (pinging a number 
of host concurrently) but that did not cause the bug.

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Comment By: Peter Åstrand (astrand)
Date: 2005-06-23 16:03

Message:
Logged In: YES 
user_id=344921

I believe it should be sufficient to add a try...except
clause around _active.remove(). Can you upload a complete
example that triggers the bug? Have you noticed this bug on
Windows, UNIX or both platforms?


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Comment By: cheops (atila-cheops)
Date: 2005-05-12 10:17

Message:
Logged In: YES 
user_id=1276121

this might be related to bug 1183780

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