Closing Time

A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

easy

Seniority

junior

Problem

Our query layer gates filter expressions before the parser sees them: each expression groups conditions with round, square, and curly brackets, and the gate confirms every opener is closed by the matching kind in the right order. Bracket characters inside a single-quoted string value are literal data, so they are ignored along with all other non-bracket characters. Return whether the brackets are balanced; an expression with no brackets is balanced.

Summary

Every bracket you open is a promise. Check that the parser keeps all of them.

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