Strings & Text
medium
Minimum Remove Valid Parentheses
Given a string with parentheses and letters, remove the fewest parentheses to make it valid.
strings
stack
validation
Strings & Text
medium
Parse key-value lines
Parse structured key-value lines into a dictionary with support for quoted values and escaped characters.
parsing
strings
dictionary
Showing 2 challenges · medium · 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.