uv - GitLite

KO | EN

gitlite — search

#javascript #python #ai #typescript #llm #golang #machine-learning #deep-learning #kubernetes #vue #pytorch #openai #mcp #open-source

uv

(★ 88,790)

An extremely fast Python package and project manager, written in Rust.

uv Latest Version Download

Download Latest Version (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

# uv

An extremely fast Python package and project manager, written in Rust.

<p align="center">
  <i>Installing <a href="https://trio.readthedocs.io/">Trio</a>'s dependencies with a warm cache.</i>
</p>

## Highlights

- A single tool to replace `pip`, `pip-tools`, `pipx`, `poetry`, `pyenv`, `twine`, `virtualenv`, and
  more.
- [10-100x faster](https://github.com/astral-sh/uv/blob/main/BENCHMARKS.md) than `pip`.
- Provides [comprehensive project management](#projects), with a
  [universal lockfile](https://docs.astral.sh/uv/concepts/projects/layout#the-lockfile).
- [Runs scripts](#scripts), with support for
  [inline dependency metadata](https://docs.astral.sh/uv/guides/scripts#declaring-script-dependencies).
- [Installs and manages](#python-versions) Python versions.
- [Runs and installs](#tools) tools published as Python packages.
- Includes a [pip-compatible interface](#the-pip-interface) for a performance boost with a familiar
  CLI.
- Supports Cargo-style [workspaces](https://docs.astral.sh/uv/concepts/projects/workspaces) for
  scalable projects.
- Disk-space efficient, with a [global cache](https://docs.astral.sh/uv/concepts/cache) for
  dependency deduplication.
- Installable without Rust or Python via `curl` or `pip`.
- Supports macOS, Linux, and Windows.

uv is backed by [Astral](https://astral.sh), the creators of
[Ruff](https://github.com/astral-sh/ruff) and [ty](https://github.com/astral-sh/ty).

## Installation

Install uv with our standalone installers:

```bash
# On macOS and Linux.
curl -LsSf https://astral.sh/uv/install.sh | sh
```

```bash
# On Windows.
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
```

Or, from [PyPI](https://pypi.org/project/uv/):

```bash
# With pip.
pip install uv
```

```bash
# Or pipx.
pipx install uv
```

If installed via the standalone installer, uv can update itself to the latest version:

```bash
uv self update
```

See the [installation documentation](https://docs.astral.sh/uv/getting-started/installation/) for
details and alternative installation methods.

## Documentation

uv's documentation is available at [docs.astral.sh/uv](https://docs.astral.sh/uv).

Additionally, the command line reference documentation can be viewed with `uv help`.

## Features

### Projects

uv manages project dependencies and environments, with support for lockfiles, workspaces, and more,
similar to `rye` or `poetry`:

```console
$ uv init example
Initialized project `example` at `/home/user/example`

$ cd example

$ uv add ruff
Creating virtual environment at: .venv
Resolved 2 packages in 170ms
   Built example @ file:///home/user/example
Prepared 2 packages in 627ms
Installed 2 packages in 1ms
 + example==0.1.0 (from file:///home/user/example)
 + ruff==0.5.0

$ uv run ruff check
All checks passed!

$ uv lock
Resolved 2 packages in 0.33ms

$ uv sync
Resolved 2 packages in 0.70ms
Checked 1 package in 0.02ms
```

See the [project documentation](https://docs.astral.sh/uv/guides/projects/) to get started.

uv also supports building and publishing projects, even if they're not managed with uv. See the
[publish guide](https://docs.astral.sh/uv/guides/publish/) to learn more.

### Scripts

uv manages dependencies and environments for single-file scripts.

Create a new script and add inline metadata declaring its dependencies:

```console
$ echo 'import requests; print(requests.get("https://astral.sh"))' > example.py

$ uv add --script example.py requests
Updated `example.py`
```

Then, run the script in an isolated virtual environment:

```console
$ uv run example.py
Reading inline script metadata from: example.py
Installed 5 packages in 12ms
<Response [200]>
```

See the [scripts documentation](https://docs.astral.sh/uv/guides/scripts/) to get started.

### Tools

uv executes and installs command-line tools provided by Python packages, similar to `pipx`.

Run a tool in an ephemeral environment using `uvx` (an alias for `uv tool run`):

```console
$ uvx pycowsay 'hello world!'
Resolved 1 package in 167ms
Installed 1 package in 9ms
 + pycowsay==0.0.0.2
  """

------------
< hello world! >
  ------------
   \   ^__^
    \  (oo)\_______
       (__)\       )\/\
           ||----w |
           ||     ||
```

Install a tool with `uv tool install`:

```console
$ uv tool install ruff
Resolved 1 package in 6ms
Installed 1 package in 2ms
 + ruff==0.5.0
Installed 1 executable: ruff

$ ruff --version
ruff 0.5.0
```

See the [tools documentation](https://docs.astral.sh/uv/guides/tools/) to get started.

### Python versions

uv installs Python and allows quickly switching between versions.

Install multiple Python versions:

```console
$ uv python install 3.12 3.13 3.14
Installed 3 versions in 972ms
 + cpython-3.12.12-macos-aarch64-none (python3.12)
 + cpython-3.13.9-macos-aarch64-none (python3.13)
 + cpython-3.14.0-macos-aarch64-none (python3.14)

```

Download Python versions as needed:

```console
$ uv venv --python 3.12.0
Using Python 3.12.0
Creating virtual environment at: .venv
Activate with: source .venv/bin/activate

$ uv run --python pypy@3.8 -- python --version
Python 3.8.16 (a9dbdca6fc3286b0addd2240f11d97d8e8de187a, Dec 29 2022, 11:45:30)
[PyPy 7.3.11 with GCC Apple LLVM 13.1.6 (clang-1316.0.21.2.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>>
```

Use a specific Python version in the current directory:

```console
$ uv python pin 3.11
Pinned `.python-version` to `3.11`
```

See the [Python installation documentation](https://docs.astral.sh/uv/guides/install-python/) to get
started.

### The pip interface

uv provides a drop-in replacement for common `pip`, `pip-tools`, and `virtualenv` commands.

uv extends their interfaces with advanced features, such as dependency version overrides,
platform-independent resolutions, reproducible resolutions, alternative resolution strategies, and
more.

Migrate to uv without changing your existing workflows — and experience a 10-100x speedup — with the
`uv pip` interface.

Compile requirements into a platform-independent requirements file:

```console
$ uv pip compile requirements.in \
   --universal \
   --output-file requirements.txt
Resolved 43 packages in 12ms
```

Create a virtual environment:

```console
$ uv venv
Using Python 3.12.3
Creating virtual environment at: .venv
Activate with: source .venv/bin/activate
```

Install the locked requirements:

```console
$ uv pip sync requirements.txt
Resolved 43 packages in 11ms
Installed 43 packages in 208ms
 + babel==2.15.0
 + black==24.4.2
 + certifi==2024.7.4
 ...
```

See the [pip interface documentation](https://docs.astral.sh/uv/pip/index/) to get started.

## Contributing

We are passionate about supporting contributors of all levels of experience and would love to see
you get involved in the project. See the
[contributing guide](https://github.com/astral-sh/uv?tab=contributing-ov-file#contributing) to get
started.

## FAQ

#### How do you pronounce uv?

It's pronounced as "you - vee" ([`/juː viː/`](https://en.wikipedia.org/wiki/Help:IPA/English#Key))

#### How should I stylize uv?

Just "uv", please. See the [style guide](./STYLE.md#styling-uv) for details.

#### What platforms does uv support?

See uv's [platform support](https://docs.astral.sh/uv/reference/platforms/) document.

#### Is uv ready for production?

Yes, uv is stable and widely used in production. See uv's
[versioning policy](https://docs.astral.sh/uv/reference/versioning/) document for details.

## Acknowledgements

uv's dependency resolver uses [PubGrub](https://github.com/pubgrub-rs/pubgrub) under the hood. We're
grateful to the PubGrub maintainers, especially [Jacob Finkelman](https://github.com/Eh2406), for
their support.

uv's Git implementation is based on [Cargo](https://github.com/rust-lang/cargo).

Some of uv's optimizations are inspired by the great work we've seen in [pnpm](https://pnpm.io/),
[Orogene](https://github.com/orogene/orogene), and [Bun](https://github.com/oven-sh/bun). We've also
learned a lot from Nathaniel J. Smith's [Posy](https://github.com/njsmith/posy) and adapted its
[trampoline](https://github.com/njsmith/posy/tree/main/src/trampolines/windows-trampolines/posy-trampoline)
for Windows support.

## License

uv is licensed under either of

- Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
  <https://www.apache.org/licenses/LICENSE-2.0>)
- MIT license ([LICENSE-MIT](LICENSE-MIT) or <https://opensource.org/licenses/MIT>)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in uv
by you, as defined in the Apache-2.0 license, shall be dually licensed as above, without any
additional terms or conditions.

uv

uv Latest Version Download

Today's picks

Was this content helpful?

Recent Feedback

uv

uv Latest Version Download

Today's picks

Was this content helpful?

Recent Feedback

Download README