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I'm trying to build a program that has 2 inputs connected to 2 limit switches and each of these needs to be first opened and then closed before the function respective to each button begins. As a safety feature, I would like to block the code until the button is closed again. After looking around online I found out that the best library is gpiozero but I can't make it work :(

The code gets stuck on the block wait_for_release() and nothing happens when releasing the button. I don't understand why if I put btn1.wait_for_press() it goes through that but not on wait_for_release.

    #btn1.wait_for_press()
    #print('If I uncomment wait_for_press it comes here but get stuck on the release anyway')

Is there a way to make this work? Even another method is appreciated! Doing wait_for_press() and then wait_for_release() doesn't work for me because I need either 1 of the 2 inputs to be pressed. Thanks in advance, here is the code:

from gpiozero import Button
from signal import pause

btn1 = Button(12, bounce_time=0.2)
btn2= Button(20, bounce_time=0.2)

def release_btn_1():
    print('Btn1 pressed')
    #btn1.wait_for_press()
    #print('Wait for press works') 
    btn1.wait_for_release()
    print('Btn1 released')
    #function 1

def release_btn_2():
    print('Btn2 pressed')
    btn2.wait_for_release()
    print('Btn2 released')
    #function 2

btn1.when_pressed = release_btn_1
btn2.when_pressed = release_btn_2

pause()
user20546541
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