code: def begin(self):
          
  
          resp = ws.ws2811_init(self._leds)
          if resp != 0:
              str_resp = ws.ws2811_get_return_t_str(resp)
              raise RuntimeError('ws2811_init failed with code {0} ({1})'.format(resp, str_resp))
docs: Initialize library, must be called once before other functions are
          called.