> For the complete documentation index, see [llms.txt](https://docs.testery.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.testery.io/get-to-know-testery/test-stacks/python.md).

# Python

### Changing your Python Version

Using Test Stacks is easy, you just need to provide a `testery.yml` file in your source repository. Add the following content...

```
test_stack:
  configuration_key: python-chrome.115-java.17-nodejs.18-python.3.8
```