# Buggy code
def __init__(self, *args, **kwds):
    super(OSVERSIONINFO, self).__init__(*args, **kwds)
    self.dwOSVersionInfoSize = ctypes.sizeof(self)
    kernel32.GetVersionExW(ctypes.byref(self))


# Traceback (NameError)
Feb 10 14:33:00 echo salt-master[2373]: [ERROR   ] Failed to import utils win_dacl, this is due most likely to a syntax error:
Feb 10 14:33:00 echo salt-master[2373]: Traceback (most recent call last):
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1334, in _load_module
Feb 10 14:33:00 echo salt-master[2373]:     ), fn_, fpath, desc)
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/win_dacl.py", line 154, in <module>
Feb 10 14:33:00 echo salt-master[2373]:     class Flags(object):
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/win_dacl.py", line 366, in Flags
Feb 10 14:33:00 echo salt-master[2373]:     'grant': win32security.ACCESS_ALLOWED_ACE_TYPE,
Feb 10 14:33:00 echo salt-master[2373]: NameError: name 'win32security' is not defined
Feb 10 14:33:00 echo salt-master[2373]: [ERROR   ] Failed to import utils saltminionservice, this is due most likely to a syntax error:
Feb 10 14:33:00 echo salt-master[2373]: Traceback (most recent call last):
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1334, in _load_module
Feb 10 14:33:00 echo salt-master[2373]:     ), fn_, fpath, desc)
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/saltminionservice.py", line 8, in <module>
Feb 10 14:33:00 echo salt-master[2373]:     from salt.utils.winservice import Service, instart
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/winservice.py", line 33, in <module>
Feb 10 14:33:00 echo salt-master[2373]:     class Service(win32serviceutil.ServiceFramework):
Feb 10 14:33:00 echo salt-master[2373]: NameError: name 'win32serviceutil' is not defined
Feb 10 14:33:00 echo salt-master[2373]: [ERROR   ] Failed to import utils winservice, this is due most likely to a syntax error:
Feb 10 14:33:00 echo salt-master[2373]: Traceback (most recent call last):
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1334, in _load_module
Feb 10 14:33:00 echo salt-master[2373]:     ), fn_, fpath, desc)
Feb 10 14:33:00 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/winservice.py", line 33, in <module>
Feb 10 14:33:00 echo salt-master[2373]:     class Service(win32serviceutil.ServiceFramework):
Feb 10 14:33:00 echo salt-master[2373]: NameError: name 'win32serviceutil' is not defined
Feb 10 14:33:01 echo salt-master[2373]: [ERROR   ] Failed to import utils win_osinfo, this is due most likely to a syntax error:
Feb 10 14:33:01 echo salt-master[2373]: Traceback (most recent call last):
Feb 10 14:33:01 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/loader.py", line 1334, in _load_module
Feb 10 14:33:01 echo salt-master[2373]:     ), fn_, fpath, desc)
Feb 10 14:33:01 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/win_osinfo.py", line 32, in <module>
Feb 10 14:33:01 echo salt-master[2373]:     class OSVERSIONINFO(ctypes.Structure):
Feb 10 14:33:01 echo salt-master[2373]:   File "/usr/lib/python2.7/dist-packages/salt/utils/win_osinfo.py", line 33, in OSVERSIONINFO
Feb 10 14:33:01 echo salt-master[2373]:     _fields_ = (('dwOSVersionInfoSize', DWORD),
Feb 10 14:33:01 echo salt-master[2373]: NameError: name 'DWORD' is not defined
Feb 10 14:33:01 echo salt-master[2373]: [ERROR   ] Exception raised when processing __virtual__ function for boto_kinesis. Module will not be loaded 'boto3.assign_funcs'
Feb 10 14:33:01 echo salt-master[2373]: [WARNING ] salt.loaded.int.module.boto_kinesis.__virtual__() is wrongly returning `None`. It should either return `True`, `False` or a new name. If you're the developer of the module 'boto_kinesis', please fix this.

# Fixed code
def __init__(self, *args, **kwds):
    super(OSVersionInfo, self).__init__(*args, **kwds)
    self.dwOSVersionInfoSize = ctypes.sizeof(self)
    kernel32.GetVersionExW(ctypes.byref(self))