functools and itertools

These two standard library modules are Python's power tools for working with functions and sequences. functools gives you tools to transform and optimize functions. itertools gives you building blocks for efficient iteration. Together they let you write elegant, memory-efficient code.

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This concept is covered in two parts:

1. Part 1: functools — partial, lru_cache, reduce, and wraps
2. Part 2: itertools — chain, combinations, groupby, islice, infinite iterators, and more

Practice

• Level 2 / 07 Config File Merger
• Module 07 Data Analysis — data transformation pipelines
• Module 08 Advanced Testing — parametrize and combinations
• Elite Track / 01 Algorithms Complexity Lab

Quick check: Take the quiz (coming soon)

Review: Flashcard decks Practice reps: Coding challenges

Further Reading

• functools — Higher-order functions (Python docs)
• itertools — Functions creating iterators (Python docs)
• Itertools Recipes (Python docs)

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