Python Input Prompt Go Back

Question

I have a script which has multiple raw_input statements. I would like to add the ability to enter \'undo\' and allow the user to go back and re-enter the last raw_input value.

Answer 1

looks like you coded in a wrong way, an input raw cannot be your point ... maybe you should create an unique raw input and keep the entry into an array

ok....now u post a code example i got it...my suggestion:

import sys

def do(prompt, step):
    if 'u' in prompt:
        step = step-1
    else:
        step = step+1

    if step>1:
        print('Please enter x for x \nPlease enter y for y \nPlease enter c to cancel \nPlease enter u to go back to previous question: ')
    else:
        print('Please enter x for x \nPlease enter y for y \nPlease enter c to cancel: ')
    return step

step = 0
prompt = ""
while prompt != 'c':
    step = do(prompt, step)
    prompt = raw_input().lower()