Caesar Cipher Shift
Implement a function to apply a Caesar cipher shift to a string, preserving case and ignoring non-letters.
Caesar Cipher Shift
Write a function that shifts letters in a string by a given amount, preserving case and ignoring non-letters.
ROT13 Transform
Implement ROT13, a letter substitution cipher that rotates the alphabet by 13 positions.
Caesar Cipher Decrypt
Implement a function that decrypts a Caesar cipher by shifting letters back by a given number.
ROT13 transform
Implement the ROT13 cipher on a string, preserving case and leaving non-letters unchanged.
Caesar Cipher Decrypt
Write a function that decrypts a Caesar cipher by shifting letters backward by a given key.
Showing 1–6 of 6 challenges · Strings & Text
Strings & Text — Python coding challenges
What you will find here
This page lists strings & text challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.
Challenges vs tutorials and quizzes
Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.