[python-win32] pythonservice.exe doesn't register

[Pavel Bychikhin]

Dear Community,

I'm trying to register pythonservice.exe as it's said in the PyWin32 
documentation, but getting errors:

C:\Program Files\Python35\Lib\site-packages\win32>pythonservice.exe 
/register
Registering the Python Service Manager...
Registration failed as sys.winver is not available or not a string

I'm using Python 3.5.3 amd64 on Windows 10, pywin32 distribution is 
pywin32-221.win-amd64-py3.5.

Is something wrong with my OS, Python or PyWin32?

Thanks in advance

-- 
Best regards,
Pavel