[!WARNING] This project is currently optimized for internal R2X workflows. You are welcome to use it, but APIs and behavior may continue to evolve as r2x-core evolves.

r2x-sienna integrates Sienna-style PSY data with r2x-core and infrasys. It provides parser and exporter plugins, plus version-upgrade utilities for input JSON, so Sienna data can be loaded into System objects and written back out in PSY-compatible form.

Quickstart · Installation · What It Provides · Usage with r2x-core · Development · License

Quickstart

Install:

pip install r2x-sienna

Parse a Sienna JSON system into an infrasys.System, then export it back to PSY JSON:

from pathlib import Path

from r2x_core import DataStore, PluginContext
from r2x_sienna import (
    SiennaConfig,
    SiennaExporter,
    SiennaExporterConfig,
    SiennaParser,
)

data_path = Path("tests/data/case5_pjm_rt/c_sys5_pjm_rt.json")
out_path = Path("output/system.json")

# Parse
parse_cfg = SiennaConfig(
    model_year=2029,
    system_name="PJM-5",
    json_path=str(data_path),
)
parse_ctx = PluginContext(config=parse_cfg, store=DataStore(path=data_path.parent))
parsed_system = SiennaParser.from_context(parse_ctx).run().system

# Export
export_cfg = SiennaExporterConfig(output_path=str(out_path))
export_ctx = PluginContext(config=export_cfg, system=parsed_system, store=DataStore(path=out_path.parent))
SiennaExporter.from_context(export_ctx).run()

Installation

From PyPI

Python requirement: >=3.11, <3.14.

pip install r2x-sienna

Using uv:

uv add r2x-sienna

From Source

git clone https://github.com/NatLabRockies/r2x-sienna.git
cd r2x-sienna
uv sync --all-groups

What It Provides

• SiennaParser: reads Sienna PSY JSON and related time series metadata into infrasys.System.
• SiennaExporter: writes infrasys.System back to Sienna-compatible PSY JSON, including supplemental attributes and optional HDF5 time series export.
• SiennaUpgrader and run_sienna_upgrades(...): version-detection and upgrade pipeline for legacy JSON data before parsing.
• Plugin entry points for r2x-core under the r2x_plugin group:
  • sienna-parser = r2x_sienna:SiennaParser
  • sienna-exporter = r2x_sienna:SiennaExporter

Usage with r2x-core

r2x-sienna follows the r2x-core plugin lifecycle.

• Build parser/exporter instances with PluginContext.
• Run plugin hooks through .run().
• Access parser/exporter configs through SiennaConfig and SiennaExporterConfig.

The parser on_upgrade() hook automatically runs Sienna data upgrades when json_path is provided, then proceeds with deserialization into a System.

Development

Install dev dependencies:

uv sync --all-groups

Run the same checks used in CI:

uv run prek run --all-files --hook-stage pre-push

Targeted commands:

uv run pytest -q -m "not slow" --maxfail=1 --disable-warnings
uv run ty check ./src/r2x_sienna/

License

BSD 3-Clause. See LICENSE.txt.