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uv

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uv add vs uv pip install

uv run script.py vs uv run python script.py

uv run exectutes the script in the context of the project's virtual environment (--active) uv run python script.py explicitly, and former would automatically detects the Python interpreter from pyproject.toml or .python-version.

`uv run`

It selects a Python version based on : - the requires-python constraint in pyproject.yaml - The avaiable Python versions managed by uv

uv python list

The highest compatible version unless explicitly pinned or specified

uv venv --python 3.11 # specified
uv python pin 3.11 # pin version by create .python-version file

system python

uv managed python versions are not automatically added to your system's PATH so you can't find it by which python;

Install Dependecy

uv pip install . # from pyproject.yaml [dependencies]
uv pip list

Best Practice

Questions

`tool.uv in pyproject.toml`

[tool.uv]
extra-index-url = ["https://download.pytorch.org/whl/cpu"] # 优先找这里的源
override-dependencies = ["markupsafe<3.0.3"] # 强制覆盖类型

uv