Metadata-Version: 2.4
Name: typer
Version: 0.25.1
Summary: Typer, build great CLIs. Easy to code. Based on Python type hints.
Author-Email: =?utf-8?q?Sebasti=C3=A1n_Ram=C3=ADrez?= <tiangolo@gmail.com>
License-Expression: MIT
License-File: LICENSE
Classifier: Intended Audience :: Information Technology
Classifier: Intended Audience :: System Administrators
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python
Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Software Development :: Libraries
Classifier: Topic :: Software Development
Classifier: Typing :: Typed
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Project-URL: Homepage, https://github.com/fastapi/typer
Project-URL: Documentation, https://typer.tiangolo.com
Project-URL: Repository, https://github.com/fastapi/typer
Project-URL: Issues, https://github.com/fastapi/typer/issues
Project-URL: Changelog, https://typer.tiangolo.com/release-notes/
Requires-Python: >=3.10
Requires-Dist: click>=8.2.1
Requires-Dist: shellingham>=1.3.0
Requires-Dist: rich>=13.8.0
Requires-Dist: annotated-doc>=0.0.2
Description-Content-Type: text/markdown
<p align="center">
<a href="https://typer.tiangolo.com"><img src="https://typer.tiangolo.com/img/logo-margin/logo-margin-vector.svg#only-light" alt="Typer"></a>
</p>
<p align="center">
<em>Typer, build great CLIs. Easy to code. Based on Python type hints.</em>
</p>
<p align="center">
<a href="https://github.com/fastapi/typer/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster" target="_blank">
<img src="https://github.com/fastapi/typer/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://github.com/fastapi/typer/actions?query=workflow%3APublish" target="_blank">
<img src="https://github.com/fastapi/typer/workflows/Publish/badge.svg" alt="Publish">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/typer" target="_blank">
<img src="https://coverage-badge.samuelcolvin.workers.dev/fastapi/typer.svg" alt="Coverage">
<a href="https://pypi.org/project/typer" target="_blank">
<img src="https://img.shields.io/pypi/v/typer?color=%2334D058&label=pypi%20package" alt="Package version">
</a>
</p>
---
**Documentation**: <a href="https://typer.tiangolo.com" target="_blank">https://typer.tiangolo.com</a>
**Source Code**: <a href="https://github.com/fastapi/typer" target="_blank">https://github.com/fastapi/typer</a>
---
Typer is a library for building <abbr title="command line interface, programs executed from a terminal">CLI</abbr> applications that users will **love using** and developers will **love creating**. Based on Python type hints.
It's also a command line tool to run scripts, automatically converting them to CLI applications.
The key features are:
* **Intuitive to write**: Great editor support. <abbr title="also known as auto-complete, autocompletion, IntelliSense">Completion</abbr> everywhere. Less time debugging. Designed to be easy to use and learn. Less time reading docs.
* **Easy to use**: It's easy to use for the final users. Automatic help, and automatic completion for all shells.
* **Short**: Minimize code duplication. Multiple features from each parameter declaration. Fewer bugs.
* **Start simple**: The simplest example adds only 2 lines of code to your app: **1 import, 1 function call**.
* **Grow large**: Grow in complexity as much as you want, create arbitrarily complex trees of commands and groups of subcommands, with options and arguments.
* **Run scripts**: Typer includes a `typer` command/program that you can use to run scripts, automatically converting them to CLIs, even if they don't use Typer internally.
## FastAPI of CLIs
**Typer** is <a href="https://fastapi.tiangolo.com" class="external-link" target="_blank">FastAPI</a>'s little sibling, it's the FastAPI of CLIs.
## Installation
Create and activate a <a href="https://typer.tiangolo.com/virtual-environments/" class="external-link" target="_blank">virtual environment</a> and then install **Typer**:
<div class="termy">
```console
$ pip install typer
---> 100%
Successfully installed typer rich shellingham
```
</div>
## Example
### The absolute minimum
* Create a file `main.py` with:
```Python
def main(name: str):
print(f"Hello {name}")
```
This script doesn't even use Typer internally. But you can use the `typer` command to run it as a CLI application.
### Run it
Run your application with the `typer` command:
<div class="termy">
```console
// Run your application
$ typer main.py run
// You get a nice error, you are missing NAME
Usage: typer [PATH_OR_MODULE] run [OPTIONS] NAME
Try 'typer [PATH_OR_MODULE] run --help' for help.
╭─ Error ───────────────────────────────────────────╮
│ Missing argument 'NAME'. │
╰───────────────────────────────────────────────────╯
// You get a --help for free
$ typer main.py run --help
Usage: typer [PATH_OR_MODULE] run [OPTIONS] NAME
Run the provided Typer app.
╭─ Arguments ───────────────────────────────────────╮
│ * name TEXT [default: None] [required] |
╰───────────────────────────────────────────────────╯
╭─ Options ─────────────────────────────────────────╮
│ --help Show this message and exit. │
╰───────────────────────────────────────────────────╯
// Now pass the NAME argument
$ typer main.py run Camila
Hello Camila
// It works! 🎉
```
</div>
This is the simplest use case, not even using Typer internally, but it can already be quite useful for simple scripts.
**Note**: auto-completion works when you create a Python package and run it with `--install-completion` or when you use the `typer` command.
## Use Typer in your code
Now let's start using Typer in your own code, update `main.py` with:
```Python
import typer
def main(name: str):
print(f"Hello {name}")
if __name__ == "__main__":
typer.run(main)
```
Now you could run it with Python directly:
<div class="termy">
```console
// Run your application
$ python main.py
// You get a nice error, you are missing NAME
Usage: main.py [OPTIONS] NAME
Try 'main.py --help' for help.
╭─ Error ───────────────────────────────────────────╮
│ Missing argument 'NAME'. │
╰───────────────────────────────────────────────────╯
// You get a --help for free
$ python main.py --help
Usage: main.py [OPTIONS] NAME
╭─ Arguments ───────────────────────────────────────╮
│ * name TEXT [default: None] [required] |
╰───────────────────────────────────────────────────╯
╭─ Options ─────────────────────────────────────────╮
│ --help Show this message and exit. │
╰───────────────────────────────────────────────────╯
// Now pass the NAME argument
$ python main.py Camila
Hello Camila
// It works! 🎉
```
</div>
**Note**: you can also call this same script with the `typer` command, but you don't need to.
## Example upgrade
This was the simplest example possible.
Now let's see one a bit more complex.
### An example with two subcommands
Modify the file `main.py`.
Create a `typer.Typer()` app, and create two subcommands with their parameters.
```Python hl_lines="3 6 11 20"
import typer
app = typer.Typer()
@app.command()
def hello(name: str):
print(f"Hello {name}")
@app.command()
def goodbye(name: str, formal: bool = False):
if formal:
print(f"Goodbye Ms. {name}. Have a good day.")
else:
print(f"Bye {name}!")
if __name__ == "__main__":
app()
```
And that will:
* Explicitly create a `typer.Typer` app.
* The previous `typer.run` actually creates one implicitly for you.
* Add two subcommands with `@app.command()`.
* Execute the `app()` itself, as if it was a function (instead of `typer.run`).
### Run the upgraded example
Check the new help:
<div class="termy">
```console
$ python main.py --help
Usage: main.py [OPTIONS] COMMAND [ARGS]...
╭─ Options ─────────────────────────────────────────╮
│ --install-completion Install completion │
│ for the current │
│ shell. │
│ --show-completion Show completion for │
│ the current shell, │
│ to copy it or │
│ customize the │
│ installation. │
│ --help Show this message │
│ and exit. │
╰───────────────────────────────────────────────────╯
╭─ Commands ────────────────────────────────────────╮
│ goodbye │
│ hello │
╰───────────────────────────────────────────────────╯
// When you create a package you get ✨ auto-completion ✨ for free, installed with --install-completion
// You have 2 subcommands (the 2 functions): goodbye and hello
```
</div>
Now check the help for the `hello` command:
<div class="termy">
```console
$ python main.py hello --help
Usage: main.py hello [OPTIONS] NAME
╭─ Arguments ───────────────────────────────────────╮
│ * name TEXT [default: None] [required] │
╰───────────────────────────────────────────────────╯
╭─ Options ─────────────────────────────────────────╮
│ --help Show this message and exit. │
╰───────────────────────────────────────────────────╯
```
</div>
And now check the help for the `goodbye` command:
<div class="termy">
```console
$ python main.py goodbye --help
Usage: main.py goodbye [OPTIONS] NAME
╭─ Arguments ───────────────────────────────────────╮
│ * name TEXT [default: None] [required] │
╰───────────────────────────────────────────────────╯
╭─ Options ─────────────────────────────────────────╮
│ --formal --no-formal [default: no-formal] │
│ --help Show this message │
│ and exit. │
╰───────────────────────────────────────────────────╯
// Automatic --formal and --no-formal for the bool option 🎉
```
</div>
Now you can try out the new command line application:
<div class="termy">
```console
// Use it with the hello command
$ python main.py hello Camila
Hello Camila
// And with the goodbye command
$ python main.py goodbye Camila
Bye Camila!
// And with --formal
$ python main.py goodbye --formal Camila
Goodbye Ms. Camila. Have a good day.
```
</div>
**Note**: If your app only has one command, by default the command name is **omitted** in usage: `python main.py Camila`. However, when there are multiple commands, you must **explicitly include the command name**: `python main.py hello Camila`. See [One or Multiple Commands](https://typer.tiangolo.com/tutorial/commands/one-or-multiple/) for more details.
### Recap
In summary, you declare **once** the types of parameters (*CLI arguments* and *CLI options*) as function parameters.
You do that with standard modern Python types.
You don't have to learn a new syntax, the methods or classes of a specific library, etc.
Just standard **Python**.
For example, for an `int`:
```Python
total: int
```
or for a `bool` flag:
```Python
force: bool
```
And similarly for **files**, **paths**, **enums** (choices), etc. And there are tools to create **groups of subcommands**, add metadata, extra **validation**, etc.
**You get**: great editor support, including **completion** and **type checks** everywhere.
**Your users get**: automatic **`--help`**, **auto-completion** in their terminal (Bash, Zsh, Fish, PowerShell) when they install your package or when using the `typer` command.
For a more complete example including more features, see the <a href="https://typer.tiangolo.com/tutorial/">Tutorial - User Guide</a>.
## Dependencies
**Typer** stands on the shoulders of giants. It has three required dependencies:
* <a href="https://click.palletsprojects.com/" class="external-link" target="_blank">Click</a>: a popular tool for building CLIs in Python. Typer is based on it.
* <a href="https://rich.readthedocs.io/en/stable/index.html" class="external-link" target="_blank"><code>rich</code></a>: to show nicely formatted errors automatically.
* <a href="https://github.com/sarugaku/shellingham" class="external-link" target="_blank"><code>shellingham</code></a>: to automatically detect the current shell when installing completion.
### `typer-slim`
There used to be a slimmed-down version of Typer called `typer-slim`, which didn't include the dependencies `rich` and `shellingham`, nor the `typer` command.
However, since version 0.22.0, we have stopped supporting this, and `typer-slim` now simply installs (all of) Typer.
If you want to disable Rich globally, you can set an environmental variable `TYPER_USE_RICH` to `False` or `0`.
## License
This project is licensed under the terms of the MIT license.