Py List Comprehension — Free Python Tutorial
Learn Py List Comprehension in Python with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Py List Comprehension in Python with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
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Py List Comprehension in Python
List comprehension is a concise way to create lists in Python. Instead of a for loop with append(), you write the whole thing in one line inside square brackets. It's faster, more readable (once you're used to it), and very "Pythonic".
Basic syntax: [expression for item in iterable]. Optional filter: [expression for item in iterable if condition]. You can also have nested comprehensions for working with 2D data.
Dict and set comprehensions follow the same pattern: {k: v for k, v in items} for dicts, {expr for item in iterable} for sets. Generator expressions use () instead of [] and are memory-efficient for large data.
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