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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def RtlGetVersion(os_version_info_struct):
 """Wraps the lowlevel RtlGetVersion routine. Args: os_version_info_struct: instance of either a RTL_OSVERSIONINFOW structure or a RTL_OSVERSIONINFOEXW structure, ctypes.Structure-wrapped, with the dwOSVersionInfoSize field preset to ctypes.sizeof(self). Raises: OSError: if the underlaying routine fails. See: https://msdn.microsoft.com/en-us/library/ windows/hardware/ff561910(v=vs.85).aspx . """

  rc = ctypes.windll.Ntdll.RtlGetVersion(ctypes.byref(os_version_info_struct))
  if rc != 0:
    raise OSError("Getting Windows version failed.")