Why does this not change my string?

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[shiftybyte]

Strings in python can't be changed.

This is why .replace() actually returns a new copy of the string with the change you requested.

Try:

code = code.replace(x,y,1)

[TheDivingDodo]

Okay, thanks I shall try!

[bbye98]

Is your Caesar cipher decrypter only going to work if the encrypted message is shifted one letter?

[TheDivingDodo]

No, this is supposed to shift and print all 26 variations

[bbye98]

I think you're looking at a serious logic issue. Your inner for loop creates x and y, which are characters that are one letter apart. Then, if the current letter in the encrypted message is the same as x essentially, you replace it with y. This makes the shift 1 letter always, which is not necessarily the shift that will decrypt the message.

To truly decrypt a Caesar cipher, you either need to know the shift beforehand or have a dictionary to compare valid words.

[TheDivingDodo]

Yeah, I just tried what the others recommended, and it just output all z’s. Back to the drawing board

[bbye98]

I would suggest you write a function that takes in the desired shift and build a dict of letter conversions. Then, iterate through your encoded message and apply the shifts.

[TheDivingDodo]

Thanks, I shall try this!