Among the many Python DataFrame libraries, StaticFrame is an alternative that prioritizes correctness, maintainability, and reducing opportunities for error. Key features include:

🛡️ Immutable Data: Provides memory efficiency, excellent performance, and prohibits side effects.
🗜️ Static Typing: Use Python type-hints to statically type index, columns, and columnar types.
🚦 Runtime Validation: Use type hints and specialized validators for runtime type and data checks.
🧭 Consistent Interface: An easy-to-learn, hierarchical, and intuitive API that avoids the many inconsistencies of Pandas.
🧬 Comprehensive dtype Support: Full compatibility with all NumPy dtypes and datetime64 units.
🔗 Broad Interoperability: Translate between Pandas, Arrow, Parquet, CSV, TSV, JSON, MessagePack, Excel XLSX, SQLite, HDF5, and NumPy; output to xarray, VisiData, HTML, RST, Markdown, LaTeX, and Jupyter notebooks.
🚀 Optimized Serialization & Memory Mapping: Fast disk I/O with custom NPZ and NPY encodings.
💼 Multi-Table Containers: The Bus and Yarn provide interfaces to collections of tables with lazy data loading, well-suited for large datasets.
⏳ Deferred Processing: The Batch provides a common interface for deferred processing of groups, windows, or any iterator.
🪶 Lean Dependencies: Core functionality relies only on NumPy and team-maintained C-extensions.
📚 Comprehensive Documentation: All API endpoints documented with thousands of easily runnable examples.