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Test Development Learning Exchange

Jun 26, 2024 · Fundamentals

Python collections module: Counter, defaultdict, deque, namedtuple, ChainMap, custom containers, heapq, and LRU cache examples

This article introduces several useful classes from Python's collections module—including Counter, defaultdict, deque, namedtuple, ChainMap, UserList/UserDict/UserString, as well as heapq and an OrderedDict‑based LRU cache—explaining their purposes and providing ready‑to‑run code examples for each.

ChainMapCollectionsNamedtuple

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Python collections module: Counter, defaultdict, deque, namedtuple, ChainMap, custom containers, heapq, and LRU cache examples

Python Programming Learning Circle

Mar 3, 2022 · Fundamentals

Advanced Python Dictionary and Set Techniques

This article introduces several high‑level Python dictionary and set methods—including fromkeys, merge, setdefault, defaultdict, OrderedDict, as well as set comprehensions and custom hashing—to simplify code, improve readability, and demonstrate practical usage patterns with clear examples.

AdvancedOrderedDictSet

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Advanced Python Dictionary and Set Techniques

Python Programming Learning Circle

Dec 24, 2021 · Fundamentals

An Overview of Python's collections Module: Counter, defaultdict, OrderedDict, namedtuple, deque, and ChainMap

This article introduces Python's collections module, explaining the purpose and usage of its specialized container types—including Counter, defaultdict, OrderedDict, namedtuple, deque, and ChainMap—along with their most common methods and practical code examples.

ChainMapCollectionsNamedtuple

0 likes · 10 min read

An Overview of Python's collections Module: Counter, defaultdict, OrderedDict, namedtuple, deque, and ChainMap

Python Programming Learning Circle

Mar 10, 2021 · Fundamentals

Using Python collections defaultdict, OrderedDict, and Sorting Techniques

This article demonstrates how to use Python's collections module, including defaultdict for grouping and counting, OrderedDict for maintaining insertion order, and various sorting techniques for dictionaries and lists of dictionaries using sorted and operator.itemgetter.

CollectionsOrderedDictdefaultdict

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Using Python collections defaultdict, OrderedDict, and Sorting Techniques