Dicts & Sets in Python: interview exercises

Dicts & Sets in Python: 7 test-checked interview exercises (Count words, Invert keys and values), each beside a worked example, with tests as you go. Free.

1. Count words
2. Invert keys and values
3. Get by dotted path
4. Merge with defaults
5. Group by a key function
6. Set operators
7. Top k most frequent

Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.

More Python topics

• Strings
• Lists & Comprehensions
• Functions & Decorators
• Iterators & Generators
• Classes & Dataclasses
• Errors & Context Managers
• Practical

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