How do I make this work?

Question

import string
import random
import time

possibleCharacters = string.ascii_lowercase + string.digits + string.ascii_uppercase + " .,!?;:"

target = input("Enter your target text: ")

attemptThis = ''.join(random.choice(possibleCharacters) for i in range(len(target)))

attemptNext = ''

completed = False

generation = 0

while completed == False:
print(attemptThis)
attemptNext = ''
completed = True
for i in range(len(target)):
if attemptThis[i] != target[i]:
com

Answer 1

What are you trying to do?

Answer 2

@AJ Mully The program takes your input and then randomly changes the letters of a beginning string of gibberish until it evolves into what the user imputed. Btw I'm sorry you didn't get that, I usually make a comment above ever line of code that says what it does but I forgot to this time.