TL;DR:

Step-by-Step Guide to Install Astral UV

Step 1: Install UV

Run the official bash script to install UV on macOS/Linux.

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curl -LsSf https://astral.sh/uv/install.sh | sh

For Windows, use PowerShell:

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powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

Check that UV is installed correctly.

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uv --version

Create a virtual environment and install packages.

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uv venv myproject
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source myproject/bin/activate  # On Windows: myproject\Scripts\activate
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uv pip install requests

Install packages in a virtual environment.

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uv pip install numpy pandas matplotlib

Execute Python scripts with dependencies.

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uv run python script.py

Initialize a new Python project.

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uv init myproject
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cd myproject
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uv add requests