Fixed imports in external samples python code. (#110)

Author: lizlooney

external_samples/color_range_sensor.py

@@ -17,7 +17,7 @@
 # @author [email protected] (Alan Smith)
 
 from component import Component, PortType, InvalidPortException
-from collections.abc import Protocol
+from typing import Protocol
 
 class DistanceCallable(Protocol):
     def __call__(self, distance : float) -> None:
@@ -78,4 +78,4 @@ def register_when_saturation_in_range(self, min_saturation : int,
                                                 max_saturation : int, 
                                                 callback : ColorCallable) -> None:
         '''Event when saturation is in range'''
-        self.saturation_in_range_callback = callback
+        self.saturation_in_range_callback = callback

external_samples/component.py

@@ -18,7 +18,7 @@
 
 from abc import ABC, abstractmethod
 from enum import Enum
-from collections.abc import Protocol
+from typing import Protocol
 
 class EmptyCallable(Protocol):
     def __call__(self) -> None:
@@ -83,4 +83,4 @@ def get_connection_port_type(self) -> list[PortType]:
     # to talk to hardware and then call callbacks
     @abstractmethod
     def periodic(self) -> None:
-        pass
+        pass

external_samples/sparkfun_led_stick.py

@@ -1,5 +1,20 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+__author__ = "[email protected] (Liz Looney)"
+
 from component import Component, PortType, InvalidPortException
-from enum import Enum
 import wpilib
 
 class SparkFunLEDStick(Component):