While loop using strings and if statements

Question

Prompt for python program: 5.16 LAB: Password modifier Many user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "!" to the end of the input string.

i becomes 1 a becomes @ m becomes M B becomes 8 s becomes $ Ex: If the input is:

mypassword the output is:

Myp@$$word! Hint: Python strings are immutable, but support string concatenation. Store and build the stronger password in the given password variable. My code so far:

word = input()
password = ''
i = 0
while i < len(word):

I'm really just confused about changing certain characters in a string using a while loop. I was also trying to use if statements. While loops are hard for me understand. I don't know where to start.

Have a nice day · Accepted Answer · 2021-03-15 21:00:51Z

3

You're doing fine. While loops have this format:

while (condition) == True: 
    # do this

In your case, you will want to put i += 1 at then end of your loop so it doesn't go on forever, like this:

while i < len(word):
    # your code here

    i += 1 # this adds 1 to i
           # so eventually it will be equal to the length of word, ending the loop

As for if statements, you could try this:

while i < len(word):
    if word[i] == 'i':
        password += '1'
    
    i += 1

The if statements will only work on the values you want to change, so add an else statement to act as a default.

while i < len(word):
    if word[i] == 'i':
        password += '1'
    else:
        password += word[i]
    
    i += 1

Now, if you get a normal letter, like h, it will add it to the password.

Hope this helps you get started!

edited Mar 15, 2021 at 21:00

answered Mar 15, 2021 at 19:48

Have a nice day

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3 Comments

adam Over a year ago

That helped a lot, I put the other if statements below the first one same formatting but using elif. Then I put a print statement after i += 1 saying print(password + '!') but when I use password as the input the output is just M@$$!

Have a nice day Over a year ago

There you go. You can also use else: as a default for normal values. Have a nice day :).

Have a nice day Over a year ago

I'll explain it in the answer :).

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