input_picker 0.1.2.0

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from input_picker import pick_bool, pick_item, Stop, Help

try:
    value = pick_bool()
except Help: # when user pick the help
    print_your_help()
except Stop: # when user pick the stop
    stop_your_app()

Tips: you can handle Stop on root:

if __name__ == '__main__':
    try:
        main()
    except Stop:
        print('User stop application.')