Leandro Hirt

Learn to read, write, filter, validate, and transform Python CSV files with reader, writer, DictReader, DictWriter, encoding, and streaming.

Master Python slicing with start, stop, step, negative indexes, reversal, shallow copies, slice assignment, deletion, and practical examples.

Understand Python sort() vs sorted(), including mutation, custom keys, reverse order, stable sorting, multiple fields, and common mistakes.

Learn to read, write, append, and process text files in Python with UTF-8 encoding, context managers, pathlib, and practical examples.