Ensure that the value passed to ws2811_led_set is an int

The caller can't cast this when value is a slice
This matters when a Numpy array is being used.

Signed-off-by: David Greaves <[email protected]>

Author: lbt

library/rpi_ws281x/rpi_ws281x.py

@@ -110,12 +110,13 @@ def __setitem__(self, pos, value):
         """
         # Handle if a slice of positions are passed in by setting the appropriate
         # LED data values to the provided value.
+        # Cast to int() as value may be a numpy non-int value.
         if isinstance(pos, slice):
             for n in range(*pos.indices(self.size)):
-                ws.ws2811_led_set(self._channel, n, value)
+                ws.ws2811_led_set(self._channel, n, int(value))
         # Else assume the passed in value is a number to the position.
         else:
-            return ws.ws2811_led_set(self._channel, pos, value)
+            return ws.ws2811_led_set(self._channel, pos, int(value))
 
     def __len__(self):
         return ws.ws2811_channel_t_count_get(self._channel)