Railway-oriented Result type for Polars data pipelines
Project description
polars-result
Railway-oriented Result type for building robust Polars data pipelines.
Installation
uv add polars-result
Quick Start
from polars_result import Result, PolarsResultError
# Successful pipeline
result = (
Result.ok(raw_dataframe)
.map(clean_columns)
.bind(validate_schema)
.map(compute_totals)
)
if result.is_ok():
df = result.unwrap()
else:
print(f"Pipeline failed: {result.unwrap_err()}")
Development
# Install dev dependencies
uv sync --extra dev
# Run tests
uv run pytest
# Lint & format
uv run ruff check src/ tests/
uv run ruff format src/ tests/
# Type check
uv run ty check src/
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