Installation

pip install tempest-core

Requires Python >=3.11. The only hard dependency is pydantic>=2.

Who uses tempest-core

You rarely install tempest-core on its own — it comes as a dependency of tempestweb (web) or tempestroid (native). But the core is standalone: you can build and diff trees with no renderer at all.

Verify

python -c "from tempest_core import App, Column, Text, build, diff; print('OK')"

Develop

uv sync --extra dev
ruff check . && ruff format --check .
pyright tempest_core
pytest -q

Recap

• pip install tempest-core — Python 3.11+, only needs pydantic.
• Import everything from the top level: from tempest_core import ….