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## Summary Add meta titles to documents in guides, excluding integration documents. <!-- What's the purpose of the change? What does it do, and why? --> ## Test Plan ``uvx --with-requirements docs/requirements.txt -- mkdocs build --strict -f mkdocs.public.yml`` <details> <summary>Build Result</summary> * ``guides/install-python`` ```html ... <meta name="description" content="Guide to install specific Python versions, manage existing installations, and automate downloads with uv."> ... <title>Install and Manage Python | uv</title> ... ``` * ``guides/projects`` ```html ... <meta name="description" content="Guide to create, manage, and build Python projects with uv, including dependencies and distributions."> ... <title>Working on projects | uv</title> ... ``` * ``guides/publish`` ```html ... <meta name="description" content="Guide to build and publish Python packages using uv"> ... <title>Publishing a package | uv</title> ... ``` * ``guides/scripts`` ```html ... <meta name="description" content="Run Python scripts quickly and manage dependencies efficiently using uv. Learn about inline metadata and more."> ... <title>Run Scripts | uv</title> ... ``` * ``guides/tools`` ```html ... <meta name="description" content="Guide to run, install, and upgrade Python tools using uv."> ... <title>Using tools | uv</title> ... ``` </details> --------- Co-authored-by: Charles Tapley Hoyt <cthoyt@gmail.com> Co-authored-by: Zanie Blue <contact@zanie.dev>
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| title | description |
|---|---|
| Installing and managing Python | A guide to using uv to install Python, including requesting specific versions, automatic installation, viewing installed versions, and more. |
Installing Python
If Python is already installed on your system, uv will detect and use it without configuration. However, uv can also install and manage Python versions for you.
!!! tip
uv will [automatically fetch Python versions](#automatic-python-downloads) as needed — you don't need to install Python to get started.
Getting started
To install the latest Python version:
$ uv python install
This will install a uv-managed Python version even if there is already a Python installation on your system. If you've previously installed Python with uv, a new version will not be installed.
!!! note
Python does not publish official distributable binaries. As such, uv uses distributions from Astral [`python-build-standalone`](https://github.com/astral-sh/python-build-standalone) project. See the [Python distributions](../concepts/python-versions.md#managed-python-distributions) documentation for more details.
Once Python is installed, it will be used by uv commands automatically.
!!! important
When Python is installed by uv, it will not be available globally (i.e. via the `python` command).
Support for this feature is in _preview_. See [Installing Python executables](../concepts/python-versions.md#installing-python-executables)
for details.
You can still use
[`uv run`](../guides/scripts.md#using-different-python-versions) or
[create and activate a virtual environment](../pip/environments.md) to use `python` directly.
Installing a specific version
To install a specific Python version:
$ uv python install 3.12
To install multiple Python versions:
$ uv python install 3.11 3.12
To install an alternative Python implementation, e.g. PyPy:
$ uv python install pypy@3.10
See the python install documentation
for more details.
Viewing Python installations
To view available and installed Python versions:
$ uv python list
See the python list
documentation for more details.
Automatic Python downloads
Note that Python does not need to be explicitly installed to use uv. By default, uv will automatically download Python versions when they are required. For example, the following would download Python 3.12 if it was not installed:
$ uv run --python 3.12 python -c "print('hello world')"
Even if a specific Python version is not requested, uv will download the latest version on demand. For example, the following will create a new virtual environment and download a managed Python version if Python is not found:
$ uv venv
!!! tip
Automatic Python downloads can be [easily disabled](../concepts/python-versions.md#disabling-automatic-python-downloads) if you want more control over when Python is downloaded.
Using an existing Python installation
uv will use existing Python installations if present on your system. There is no configuration necessary for this behavior: uv will use the system Python if it satisfies the requirements of the command invocation. See the Python discovery documentation for details.
To force uv to use the system Python, provide the --python-preference only-system option. See the
Python version preference
documentation for more details.
Next steps
To learn more about uv python, see the Python version concept
page and the command reference.
Or, read on to learn how to run scripts and invoke Python with uv.