python in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored错误

引用：
http://stackoverflow.com/questions/8774958/keyerror-in-module-threading-after-a-successful-py-test-run
(env)czajnik@autosan:~$ python test.py Exception KeyError: KeyError(139924387112272,) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored

import sysif 'threading' in sys.modules:    del sys.modules['threading']import geventimport gevent.socketimport gevent.monkeygevent.monkey.patch_all()