argparse Lesson 3: Validation & Errors — Data Safety, Type Checking Learn how to validate command-line arguments in Python using argparse—type checking, required flags, choices, and custom validators with real examples.
argparse Flags & Options: -help Me Help You Flags and options are what turn a Python script into a real CLI. In Part 2 of this argparse series, we break down boolean flags, typed arguments, defaults, and help text — the stuff that prevents broken input and brittle tools.
argparse Featured 🐍 Python Argparse Tutorial: Turn Scripts into Real Command-Line Tools Learn how to use Python’s argparse module to accept command-line arguments, generate help text, and build flexible CLI tools without hardcoding values.
