# Write a function is_balanced(s) that uses a stack to check if parentheses are balanced

Canonical URL: <https://datadriven.io/problems/write-a-function-isbalanceds-that-uses-a-stack-to-check-i-d8d81064>

Domain: Python · Difficulty: medium

## Problem

Write a function is_balanced(s) that uses a stack to check if parentheses are balanced. Test it with '(())', '(()', and '()()' and print each result (True/False).

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