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875 challenges 536 easy 303 medium 36 hard

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Strings & Text easy

Count vowels

Count the number of vowels (a, e, i, o, u) in a string (case-insensitive).

strings counting

Strings & Text easy

Camel case to snake case

Write a function that converts camelCase input to snake_case while handling acronyms and numbers correctly.

strings case-conversion parsing

Strings & Text easy

Count consonants

Write a function that counts the number of consonant letters in a string.

strings counting loops

Strings & Text easy

Rotate String Right

Implement a function that rotates a given string to the right by a specified number of positions, handling shifts larger than the string length.

strings rotation slicing

Strings & Text easy

Find all numbers in text

Write a function that extracts all standalone integers from a text string using regular expressions.

regex parsing numbers

Strings & Text easy

Caesar Cipher Decrypt

Implement a function that decrypts a Caesar cipher by shifting letters back by a given number.

strings ascii cipher

Strings & Text easy

Parse numbered list

Take a string containing a numbered list and return a clean list of the item texts.

string parsing strip split

Strings & Text easy

Parse range notation

Parse a comma-separated list of ranges and individual numbers, expanding each range into its full sequence.

strings parsing ranges

Strings & Text medium

Additive number sequence

Check whether a given digit string can be partitioned into a valid additive sequence where each term is the sum of the previous two.

strings parsing fibonacci

Showing 9 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.