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Python
Learn Python as a connected topic across chapters, concepts, simulations, and interview reasoning.
10 Concepts34 Articles12h 36m
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Learn Python as a connected topic across chapters, concepts, simulations, and interview reasoning.
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Series that contain articles from Python. Select a path to filter the article list.
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Article 1Pythonic Code: Idioms Every Developer Should KnowTLDR: Writing for i in range(len(arr)): works, but Python veterans will flag it in your first code review. Idiomatic Python uses enumerate, zip, comprehensions, context managers, unpacking, the walrus27 minArticle 2Python OOP: Classes, Dataclasses, and Dunder Methodsš Why Every Java Developer Writes Un-Pythonic Classes on Day One
Imagine a developer ā let's call him Daniel ā who has written Java for six years. He sits down to write his first Python class and pro22 minArticle 3List Comprehensions, Generators, and Lazy Evaluation in PythonTLDR: Python list comprehensions offer clean, readable syntax for eager sequence construction, but allocate memory for all elements immediately. Swapping brackets for parentheses (...) creates a gener24 minArticle 4Functions in Python: Parameters, Return Values, and ScopeTLDR: Python functions are first-class objects, not just reusable blocks. They support keyword arguments, safe defaults with None, variadic *args/**kwargs, closures, and LEGB scope resolution. These f22 minArticle 5Functional Python: map, filter, itertools, and functoolsš The Nested-Loop Tax: When Five Stages of ETL Collapse Under Their Own Weight
Picture this task. You receive a batch of raw order records from a sales API. Your pipeline must: (1) skip cancelled ord29 minArticle 6File I/O and Exception Handling in PythonTLDR: Python file operations should always use the with statement to ensure resource cleanup. Use the EAFP (Easier to Ask Forgiveness than Permission) style with specific try/except/else/finally block22 minPage 1 of 6