Bob's Blog

按照我们这种上古时期开始写python的，现在习惯用pip安装包、用virtualenv配置虚拟环境、用pyenv管理python版本，前几年用conda。然后现在因为接触MCP，开始了解UV这个工具。

UV执行速度很快，而且功能相当于是集成了刚才列的几个工具的功能，可以生成uv.lock来固定环境，跟pyproject.toml也集成在一起。用惯了的话，还是很方便的。

这里就对一些常用的命令做个记录备份

# install uv to manage python and virtualenv
curl -LsSf https://astral.sh/uv/install.sh | sh

# global config path
~/.config/uv/uv.toml

# init a project named qamcp, will create folder and some files like pyproject.toml, .gitignore, readme, .python-version
uv init qamcp

# create virtualenv, if not give venv name, the default folder is .venv
uv venv
uv venv venv

# list installed packages, notice if use 'pip list' will list the default python environment's packages
uv pip list

# install or upgrade or uninstall one package by pip
uv pip install requests==2.26.0
uv pip upgrade requests
uv pip uninstall requests

# add package to pyproject.toml
uv add requests

# install from requirements.txt and add to pyproject.toml
uv add -r requirements.txt -c constraints.txt
uv pip install -r requirements.txt

# install and assign index source
uv pip install -i https://pypi.tuna.tsinghua.edu.cn/simple/
uv add --default-index https://pypi.tuna.tsinghua.edu.cn/simple requests

# install dependencies in pyproject.toml
uv sync  # install to default venv: .venv
uv sync --active  # install to current active venv

# list python versions and install one version
uv python list
uv python install 3.12.8

# set default python version
uv python default 3.12

# limit the python version
uv python pin 3.11

# list dependencies
uv tree
uv tree --package fastmcp

# export installed packages to requirements.txt
uv pip freeze > requirements.txt

# export productions packages to requirements.txt and exclude dev packages
uv pip freeze --production > requirements.txt
# install to dev packages
uv pip install --dev pytest



##uv.lock
#[[tool.uv.index]]
## Optional name for the index.
#name = "tsinghua"
#url = "https://pypi.tuna.tsinghua.edu.cn/simple"
#default = true
#
#[[tool.uv.index]]
#name = "aliyun"
#url = "https://mirrors.aliyun.com/pypi/simple/"

之后再来更新