Typer and Rich Best Practices

<user_input>$ARGUMENTS</user_input> If <user_input/> contains a directory or file then that is what should be examines against this guide specifically. Start immediately. If its empty, then use this as a reference for existing tasks.

Correctness patterns for building CLI applications with Typer and Rich, focused on non-TTY environments and common failure modes. For API reference, load the dedicated skills:

• Skill(skill="python3-development:typer") — Typer CLI framework API reference
• Skill(skill="python3-development:rich") — Rich terminal UI API reference

Non-TTY and Programmatic Usage

Consult ../python3-development/references/python3-standards.md when applying shared architecture, typing, testing, or CLI rules; full standards, graphs, and amendment process are documented there.

See references/non-tty-patterns.md — Console behavior without TTY, width defaults, force_terminal vs width, Progress/Live in non-interactive contexts, environment variables.

Rich Table Width Measurement

See references/rich-tables.md — width measurement pattern that prevents wrapping at 80 columns in non-TTY output.