import machine
import time

btnR = machine.Pin(4, machine.Pin.IN, machine.Pin.PULL_UP)
btnB = machine.Pin(5, machine.Pin.IN, machine.Pin.PULL_UP)
btnY = machine.Pin(6, machine.Pin.IN, machine.Pin.PULL_UP)
ledR = machine.Pin(23, machine.Pin.OUT)
ledB = machine.Pin(19, machine.Pin.OUT)
ledY = machine.Pin(18, machine.Pin.OUT)


while True:
    if btnR.value() == 0:
        ledR.value(1)

    elif btnB.value() == 0:
        ledB.value(1)

    elif btnY.value() == 0:
        ledY.value(1)

    else:
        ledR.value(0)
        ledB.value(0)
        ledY.value(0)