[New-bugs-announce] [issue14623] Shutdown exception in daemon thread

Mike Hobbs report at bugs.python.org
Thu Apr 19 22:49:29 CEST 2012

New submission from Mike Hobbs <mhobbs at 8thbridge.com>:

This issue is very similar to the issue original reported in issue1722344, except that it occurs in daemon threads. Here's a sample exception:

Exception in thread Thread-1 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/threading.py", line 552, in __bootstrap_inner
  File "/usr/local/lib/python2.7/threading.py", line 505, in run
  File "/opt/8b/libr8/eb/util/graphite.py", line 86, in run
  File "/usr/local/lib/python2.7/Queue.py", line 168, in get
  File "/usr/local/lib/python2.7/threading.py", line 237, in wait
<type 'exceptions.TypeError'>: 'NoneType' object is not callable

Investigating line 237 in threading.py shows that RuntimeError must have been set to None. The issue appears to be that Py_Finalize wipes all globals while there are still daemon threads running. Would it be correct to terminate daemon threads prior to wiping the globals, since the threads won't be able to accomplish much anyway?

components: Interpreter Core
messages: 158746
nosy: mhobbs
priority: normal
severity: normal
status: open
title: Shutdown exception in daemon thread
type: behavior
versions: Python 2.7

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