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Python syntax, variables, operators, f-strings, slicing, scope, and core built-ins.

Lists, tuples, dicts, sets, comprehensions, zip, enumerate, and the collections module.

Decorators, closures, lambda, *args/**kwargs, generators, map/filter, and LEGB scope.

Classes, inheritance, dunder methods, @property, abstract classes, dataclasses, and MRO.

Imports, packages, __name__, os, pathlib, json, re, collections, itertools, and venvs.

try/except/finally, custom exceptions, file I/O, context managers, assert, and logging.