Got this report second-hand by email from the author of mwlib. Neither Ralf nor I have been able to reproduce it.

Hi Skip,

one of our users hit a bug in the lockfile module:

from: http://groups.google.com/group/mwlib/browse_thread/thread/fac4d193b2ccbe33

,---- | 010-10-22T10:04:24 mwlib.serve.info >> Creating directory '/var/cache/ | mw-serve/f0/f04461c3fcc1e139' | Traceback (most recent call last): | File "/usr/lib/python2.6/wsgiref/handlers.py", line 93, in run | self.result = application(self.environ, self.start_response) | File "/usr/local/lib/python2.6/site-packages/mwlib-0.12.13-py2.6- | linux-i686.egg/mwlib/serve.py", line 180, in call | response = self.dispatch(request) | File "/usr/local/lib/python2.6/site-packages/mwlib-0.12.13-py2.6- | linux-i686.egg/mwlib/serve.py", line 207, in dispatch | lock = FileLock(self.get_collection_dir(collection_id)) | File "/usr/local/lib/python2.6/site-packages/mwlib-0.12.13-py2.6- | linux-i686.egg/mwlib/serve.py", line 43, in FileLock | return lockfile.FileLock(path, threaded=threaded) | File "build/bdist.linux-i686/egg/lockfile/init.py", line 171, in | init | TypeError: unsupported operand type(s) for &: 'NoneType' and 'long' `----

downgrading to 0.8 did fix the issue for him.

Cheers,

- Ralf

I have a similar bug. Mac OS X 10.6, python 2.6

pf = None if not pidfile else lockfile.FileLock(pidfile)

File "/Library/Python/2.6/site-packages/lockfile-0.9.1-py2.6.egg/lockfile/init.py", line 171, in init self.tname = "-%x" % (ident & 0xffffffff)

TypeError: unsupported operand type(s) for &: 'NoneType' and 'int'

Not sure if this helps...

From my mac:

import threading threading.current_thread().name 'MainThread' threading.current_thread().ident

Looks like ident is None?

What version are you using? I'm pretty sure I fixed this awhile ago, though I'm on vacation right now so won't be able to check for a week or two.

I'm using the latest trunk version and get the same error when I run a job on the sun grid engine.

File ".../lockfile.py", line 167, in init 0xffffffff) TypeError: unsupported operand type(s) for &: 'NoneType' and 'int'

Please try branches/packages. Trunk is 0.8 which is no longer being developed. branches/packages is 0.9.x, the current focus of development.

marko-mac:goInvest marko$ python Python 2.6.1 (r261:67515, Aug 2 2010, 20:10:18) [GCC 4.2.1 (Apple Inc. build 5646)] on darwin Type "help", "copyright", "credits" or "license" for more information.

import lockfile pid_file = lockfile.FileLock('marko.pid') Traceback (most recent call last): File "", line 1, in File "/Library/Python/2.6/site-packages/lockfile/init.py", line 171, in init self.tname = "-%x" % (ident & 0xffffffff) TypeError: unsupported operand type(s) for &: 'NoneType' and 'int'

Same error here.

marko-mac:goInvest marko$ pip freeze | grep lockfile lockfile==0.9.1

Hi, I've run into the same problem. For some reason, the thread is active and has the ident attribute and yet it is None. If you import thread and do thread.get_ident() it returns a value. I change the above line 171 in init,py to this to get around this bug:

        ident = getattr(t, "ident", hash(t))
        if ident == None: ident = hash(t)
        self.tname = "-%x" % (ident & 0xffffffff)

Just check that ident is not None and use the hash value. Using getattr with a default value works only if the attribute doesn't exist, but in this case it does, it's just None.

Confirming that Comment 7 solves the problem. Can we please get this fixed upstream?

I think this is caused by a bug in python itself. This bug made dummy threads and other threads not created with the threading module have an ident == None. See here for more: http://bugs.python.org/issue5632

Comment 7 solves problem for me. Look forward to seeing it in the trunk.