📝 Update README with Python tool and usage examples

README.md

@@ -1,5 +1,25 @@
 # 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
+<Response [200]>
+```
+
 > https://developer.aliyun.com/mirror/pypi/
 
 `~/.pip/pip.conf`