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+For a Python CLI framework, use Typer, or argparse when a script can't take dependencies. For a full-screen terminal app, use Textual.
+
+How to choose:
+
+- A new CLI: Typer
+- A script that runs on the standard library alone: argparse
+- Decorators instead of type hints, or subcommands loaded lazily at runtime: Click
+- A quick CLI over an existing function or class, for debugging or exploring code: Fire
+- An interactive prompt with completion, history, and key bindings: prompt_toolkit
+- Colored output, tables, and pretty logs: Rich
+- A progress bar on a loop: tqdm, or alive-progress for animated bars
+- A full-screen terminal UI: Textual, or urwid inside an event loop you already run, such as Twisted or Trio
+- ASCII animations and effects: asciimatics
+- ANSI colors on Windows consoles: colorama
+
+With Typer, declare each parameter with `Annotated`. Its tutorial keeps repeating one line: ["Prefer to use the `Annotated` version if possible."](https://typer.tiangolo.com/tutorial/arguments/optional/) Create one `typer.Typer()` app and register your commands on it. Test them with `CliRunner`, which calls the app with a list of arguments and gives you back the exit code and output.
+
+Typer builds on Click, so reach for Click itself when you'd rather write decorators, or when your app has so many subcommands that they should [load lazily at runtime](https://click.palletsprojects.com/en/stable/). Group commands with `@click.group()`, and test them with `click.testing.CliRunner`.
+
+Use argparse when the tool has to run without installing anything. Python's own docs call it [the recommended choice](https://docs.python.org/3/library/optparse.html#choosing-an-argument-parser) among the standard library's parsers, and `add_subparsers()` handles subcommands.
+
+With Rich, create one `Console` and share it across the app: ["Most applications will require a single Console instance"](https://rich.readthedocs.io/en/stable/console.html). Add a second one with `stderr=True` for errors, and pass `RichHandler` to `logging.basicConfig()` so your logs get the same formatting.
+
+With Textual, keep styles in a separate `.tcss` file and run `textual run --dev` to [live edit them](https://textual.textualize.io/guide/CSS/). For tests, `run_test()` starts the app headless and gives you a `Pilot` that presses keys and clicks widgets.
+
+Whatever you pick, ship the CLI as a package, not a script. Click's docs put it plainly: ["It's recommended to write command line utilities as installable packages with entry points instead of telling users to run `python hello.py`."](https://click.palletsprojects.com/en/stable/entry-points/) Declare the command under `[project.scripts]` in `pyproject.toml`, and users can install it with pipx or `uv tool install`.