mypy improvements

Author: georgeharker

adafruit_neotrellis/multitrellis.py

@@ -123,6 +123,13 @@ def set_callback(self, x: int, y: int, function: CallbackType):
         pad = self._key_pads[y][x]
         pad.callbacks[pad.key_index(x, y)] = function
 
+
+    def get_callback(self, x: int, y: int) -> Optional[CallbackType]:
+        """Get a callback function for when an event for the key at index x, y
+        (measured from the top lefthand corner) is detected."""
+        pad = self._key_pads[y][x]
+        return pad.callbacks[pad.key_index(x, y)]
+
     def color(self, x: int, y: int, color: PixelType):
         """Set the color of the pixel at index x, y measured from the top
         lefthand corner of the matrix"""

adafruit_neotrellis/neotrellis.py

@@ -91,7 +91,7 @@ def __init__(self, i2c_bus, interrupt=False,
         self.callbacks = [None] * _NEO_TRELLIS_NUM_KEYS
         self.pixels = NeoPixel(self, _NEO_TRELLIS_NEOPIX_PIN, _NEO_TRELLIS_NUM_KEYS)
 
-    def activate_key(self, key, edge, enable=True):
+    def activate_key(self, key: int, edge: int, enable: bool = True):
         """Activate or deactivate a key on the trellis. Key is the key number from
            0 to 16. Edge specifies what edge to register an event on and can be
            NeoTrellis.EDGE_FALLING or NeoTrellis.EDGE_RISING. enable should be set