added documentation to input_handler.py

pocket_friends/game_files/io_helpers/input_handler.py

@@ -4,8 +4,15 @@ from pocket_friends.game_files.io_helpers.gpio_handler import Constants, GPIOHan
 
 
 class InputHandler:
+    """
+    Class that is implemented into surfaces in order to control the
+    pressing of buttons on both the real hardware and on a keyboard.
+    """
+
     def __init__(self, pygame_clock):
         self.clock = pygame_clock
+
+        # If not on actual hardware, fake the GPIO in order to get it working correctly.
         try:
             importlib.util.find_spec('RPi.GPIO')
             import RPi.GPIO as GPIO
@@ -13,6 +20,7 @@ class InputHandler:
         except ImportError:
             import pocket_friends.game_files.io_helpers.fake_gpio as GPIO
             self.on_hardware = False
+
         self.last_input_tick = 0
 
     def create_event(self, pressed_button):
@@ -65,6 +73,9 @@ class InputHandler:
                     running = False
 
     def update(self):
+        """
+        Run the input handler and check for inputs.
+        """
         if self.on_hardware:
             self.handle_gpio()
         else: