# Filename: redact.py
# Author: Brian L. Walter
# Description of contents:
#   A simple program that replaces digits in an input string with Xs.

def main():
    # Welcome the user.
    print ("\nI'm in the mood to redact something!")

    # Get the string to redact.
    input = raw_input("\nPlease enter a string you'd like to clean up: \n")

    # Initialize DIGITS, the sequence of forbidden characters.
    DIGITS = "1234567890"
    # Initialize output, the accumulator variable for the output.
    output = ""

    # Consider each character of the input in turn, either adding it
    # to the output (if it's not a digit) or adding an X to the output
    # (if it is a digit).
    for char in input:
        if char in DIGITS:
            output += "X"
        else:
            output += char

    # Print out the results.
    print "\nHere's the version we'll show the press:"
    print output

    # Wait for the user to hit enter before exiting.
    raw_input("\nHit enter to exit.")

main()