check for player button presses

pymon.py

            while len(player) <4:
                sleep(0.3)
                if green.is_pressed:
                    player.append("green")
                    neo("green",0.1)
                    print(player)
                elif pink.is_pressed:
                    player.append("pink")
                    neo("pink",0.1)
                    print(player)
                elif yellow.is_pressed:
                    player.append("yellow")
                    neo("yellow",0.1)
                    print(player)
                elif blue.is_pressed:
                    player.append("blue")
                    neo("blue",0.1)
                    print(player)