Is pangram
Write a function that determines whether a given string is a pangram, ignoring case and non-letter characters.
Is pangram?
Implement is_pangram(s) to return True if the string contains every letter from 'a' to 'z' at least once, ignoring case and non-alphabetic characters.
Is isogram?
Write a function that checks whether a given word is an isogram, ignoring letter case and only considering alphabetic characters.
Extract mentions
Extract unique @mentions from a string, respecting email-like patterns and punctuation.
Showing 4 challenges · easy · Strings & Text
Strings & Text — Python coding challenges
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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.
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