Use frozensets as dictionary keys

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

Domain

Python

Difficulty

medium

Problem

Use frozensets as dictionary keys. Create a dict that maps frozenset({'a', 'b'}) to 'pair_ab' and frozenset({'c', 'd'}) to 'pair_cd'. Look up the key frozenset({'b', 'a'}) and print the result.

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