Flow Control Help

[menator01]

One way:

#! /usr/bin/env python3

acceptable = ['r', 'p', 's', 'q']

while True:
    print(f'Allowed input - {", ".join(acceptable)}')
    choose = input('>> ').lower()

    if choose == 'q':
        break
    if choose in acceptable:
        print(f'{choose} is allowed.')
    else:
        print(f'{choose} is not allowed')