Learn String Manipulation by Building a Cipher - Step 29

Python
1

Tell us what’s happening:

The confusing part for me is that when I added a new variable, “new_index,” it told me that I should declare it, and after I did it, it kept saying that I should declare “new_index” even though I already added it. Can someone help me with that?

Your code so far


# User Editable Region

text = 'Hello World'
shift = 3
alphabet = 'abcdefghijklmnopqrstuvwxyz'

for char in text():
    index = alphabet.find(char)
    new_index = index + shift
    print(char, index)

# User Editable Region

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 29

2

Hi, welcome to the forum :wave:

At the end of your loop body

Put it as the last line of code in the loop.

3

tried it and it did not work, the error is the same

my code’s example:

for char in text():
    index = alphabet.find(char)
    print(char, index)
    new_index = index + shift
4

I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

Pre-formatted-text
Pre-formatted-text1356×380 401 KB

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').

5

You’ve changed the loop variable.

Reset the step and try it again.

6

Found the solution, thanks!

7

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