# python-tests > Python tool: https://github.com/astral-sh/uv ```shell uvx pycowsay 'hello world!' ``` ```shell $ echo 'import requests; print(requests.get("https://astral.sh"))' > example.py $ uv add --script example.py requests Updated `example.py` ``` ```shell $ uv run example.py Reading inline script metadata from: example.py Installed 5 packages in 12ms ``` ```shell uv run --python 3.12 https://git.hatter.ink/hatter/python-tests/raw/branch/main/leap_year.py ``` > https://developer.aliyun.com/mirror/pypi/ `~/.pip/pip.conf` ```ini [global] index-url = http://mirrors.aliyun.com/pypi/simple/ [install] trusted-host=mirrors.aliyun.com ``` ```shell pip install requests pip install cryptography ``` ---- ```shell PYTHONPATH=./.venv/lib/python3.10/site-packages/ ./show_my_ip.py ```