docs: def _win32_strerror(err):
      """ expand a win32 error code into a human readable message """
  
      # FormatMessage will allocate memory and assign it here
      buf = ctypes.c_char_p()
      FormatMessage(
          FORMAT_MESSAGE_FROM_SYSTEM
          | FORMAT_MESSAGE_ALLOCATE_BUFFER
          | FORMAT_MESSAGE_IGNORE_INSERTS,
          None,
          err,
          0,
          buf,
          0,
          None,
      )
      try:
          return buf.value
      finally:
          LocalFree(buf)