Automation & Scripting

Create files, list directories, read environment variables — everything the OS exposes, from Python.

argv, stdout, sys.path, sys.modules — direct access to the Python interpreter's own internals.

Path objects that think — join with /, read files directly, glob recursively, no more string concatenation.

shutil handles whole-file and whole-directory operations — copying, moving, deleting trees, and creating archi

Reading and writing files in Python — the open() function, file modes, text vs binary, encodings, and the with

The subprocess module runs external commands and programs from Python — capturing their output, sending input,

argparse turns command-line arguments into a clean, validated Python interface — with automatic help text, typ

The time module provides low-level access to the system clock, sleeping, and performance measurement — the fou

Search text for patterns — emails, phone numbers, dates, anything describable as a regular expression.

The csv module reads and writes comma-separated values files correctly — handling quoting, escaping, different

Replace print() with a proper logging system — levels, file rotation, structured output, and zero-cost debug m

A persistent command-line to-do list in Python — add, complete, delete, and list tasks saved to a JSON file th

A Markdown to HTML converter in pure Python — headings, bold, italic, links, images, lists, code blocks, block