Custom Sort String
Given a string s and an order string, reorder s so that characters that appear in order come first in that order, and all other characters are appended in stable original order.
Parse URL components
Write parse_url that splits a URL into its standard components with defaults for missing parts.
Parse HTTP Status Line
Write a function that parses a well-formed HTTP status line into its three components.
Parse key-value lines
Parse structured key-value lines into a dictionary with support for quoted values and escaped characters.
Parse markdown headers
Write a function that parses markdown headers and returns their levels and texts.
Parse bullet list
Parse a markdown-style bullet list and return the list of item texts, stripping bullet markers and trimming surrounding whitespace.
Decode base64 string
Write a function that decodes a base64 string to its original UTF-8 text without using the base64 module.
Parse Version SemVer
Write a function that parses a semantic version string into its numeric components.
Compare Version Strings
Given two version strings, compare them numerically by splitting on dots and ignoring leading zeros.
Parse path segments
Implement a function that parses a path string into clean segments, ignoring slashes, empty parts, and dot segments.
Parse coordinate pairs
Parse a string of coordinate pairs into a list of coordinate lists.
Parse range notation
Parse a comma-separated list of ranges and individual numbers, expanding each range into its full sequence.
Parse Boolean Strings
Implement a function that parses a boolean string into a Python bool, handling True/False/Yes/No/1/0 case-insensitively.
User Friendly Message
Given a raw user input, format it into a single clean sentence with proper sentence case and trimming.
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.
Crawler Log Folder
Given a list of folder navigation operations, compute the minimum steps required to return to the main folder.
Caesar Cipher Decrypt
Write a function that decrypts a Caesar cipher by shifting letters backward by a given key.
Showing 73–89 of 89 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.