How do I "loop" this else statement?

Question

I am pretty new to Python and I am having trouble with this 'quiz' I am creating.

answer_1_choices = {
    'A' : 'A: A list is a datatype that stores a sequence of items with individual indexes that are mutable.',
    'B' : 'B: A list is a datatype that stores a sequence of items with individual indexes that are immutable.',
    'C' : 'C: A list is a datatype that stores a sequence of items assigned to individual keys that are immutable.'
    }
Number_One = '1. What is a list?'

def answer():
    x = input()
    if x == 'A' or x == 'a':
        print('Correct!')
    else:
        print('That is an incorrect response.  Please try again.' + '\n' + '\n' + Number_One + '\n')
        print(answer_1_choices['A'] + '\n' + '\n' + answer_1_choices['B'] + '\n' + '\n' +  answer_1_choices['C'])
        print('\n' + 'Is the answer A, B, or C?  Type the letter of your choice.')

def question_one():
    print(Number_One + '\n')
    print(answer_1_choices['A'] + '\n' + '\n' + answer_1_choices['B'] + '\n' + '\n' +  answer_1_choices['C'])
    print('\n' + 'Is the answer A, B, or C?  Type the letter of your choice.')


question_one()
answer()

I want the else statement to run infinitely every time that the input is something other than 'A' or 'a'. I know I have to use some kind of loop or something, but I just can't seem to figure it out. Can someone help me?

score 7 · Accepted Answer · edited Dec 12 '17 at 20:31

7

What you're thinking of there is a while loop. Instead of checking for x = 'A' or x = 'a', you might try testing for whether x isn't 'A' or 'a'.

Try this:

while (x != 'A' and x != 'a'):
    print('That is an incorrect response.  Please try again.' + '\n' + '\n' + Number_One + '\n')
    print(answer_1_choices['A'] + '\n' + '\n' + answer_1_choices['B'] + '\n' + '\n' +  answer_1_choices['C'])
    x = input('\n' + 'Is the answer A, B, or C?  Type the letter of your choice.')
print('Correct!')

This way, it will only print "Correct!" once the breaking condition has been satisfied.

edited Dec 12 '17 at 20:31

Daniel

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answered Dec 12 '17 at 20:26

awb

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You should change `X` inside the loop. – Niklas R Dec 12 '17 at 20:29
Fixed! Thanks, I also changed the last print statement to the prompt for input. – awb Dec 12 '17 at 20:31
1

Thank you!! I rearranged a few things and it works. – SunGone Dec 12 '17 at 21:21

score -1 · Answer 2 · edited Dec 12 '17 at 20:50

-1

Add as the last line of the else case a recursive call:

 answer()

Full code:

def answer():
    x = input()
    if x == 'A' or x == 'a':
        print('Correct!')
    else:
        print('That is an incorrect response.  Please try again.' + '\n' + '\n' + Number_One + '\n')
        print(answer_1_choices['A'] + '\n' + '\n' + answer_1_choices['B'] + '\n' + '\n' +  answer_1_choices['C'])
        print('\n' + 'Is the answer A, B, or C?  Type the letter of your choice.')
        answer()

edited Dec 12 '17 at 20:50

Nir Alfasi

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answered Dec 12 '17 at 20:24

Tal

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Comments are not for extended discussion; this conversation has been [moved to chat](http://chat.stackoverflow.com/rooms/161132/discussion-on-answer-by-tal-how-do-i-loop-this-else-statement). – Brad Larson Dec 13 '17 at 17:52

How do I "loop" this else statement?

2 Answers2