def prompt(prompt):
    while True:
        try:
            return input(prompt)
        except EOFError:
            print()
            exit(0)
        except KeyboardInterrupt:
            print()
            exit(0)
        # in case: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 11: invalid continuation byte
        except UnicodeDecodeError as e:
            print(e)
            print('prompt ignored')