[users at bb.net] Buildbot-worker 0.9.3 fails to start on Windows

[Grzegorz Antoniak]

Hello,

I would like to know what is the preferred version of Python for running
buildbot-worker on Windows?

Currently I'm trying 0.9.3 on Python 3.6, but it fails with an error:

    File "C:\python36\lib\site-packages\twisted\spread\pb.py", line 1076 [...]
        m.update(password)
    builtins.TypeError: Unicode-objects must be encoded before hashing

I've also tried 0.9.2 and 0.9.1, same error.

I've tried to install 0.9.3 on Python 2.7, but it failed with this
error:

    File "c:\python27\lib\site-packages\buildbot_worker\base.py", line 315[...]
        self.numcpus = multiprocessing.cpu_count()
    File "c:\python27\lib\multiprocessing\__init__.py", line 136, in cpu_count
        raise NotImplementedError('cannot determine number of cpus')
    exceptions.NotImplementedError: cannot determine number of cpus

I've checked the documentation for `multiprocessing.cpu_count`, and it
says that this function can throw NotImplementedError, as it happens on
my machine. I've added a simple patch to catch this exception in
`base.py` around line 315, the error was gone and the worker started
successfully, but now I'm having some problems installing `pywin32`
(which are not related to this mailing list) so the worker is still not
fully operational.

So I'm wondering, what is the Python setup of the developers? Which
version of Python is known to work on Windows without any patches?

Regards,
Grzegorz Antoniak