def __init__(self): self.api = WinUSBApi() byte_array = c_byte * 8 self.guid = GUID( 0xA5DCBF10L, 0x6530, 0x11D2, byte_array(0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED)) self.handle_file = INVALID_HANDLE_VALUE self.handle_winusb = c_void_p() self._index = -1