Kola kdb+ Python API

Kola the Fastest kdb+ Python Interface

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by Jo Shinonome. Source and issues on kola github.

Why kola?

• Open source and free for latest Linux, macOS and Windows
• the most efficient/fastest way to
  • query data from kdb+
  • non-kdb data to kdb+
• extremely fast dataframe operations powered by polars
• very likely support Python 3.13 in Oct 2024, right after Python 3.13 is released
• can be extended to support R (Already works, never make a proper release)

• core parts (uncompression and deserialization) are in Rust (84% code)
  • c level performance
  • better memory management, 30%-50% less memory when querying data from kdb
  • https://github.com/jshinonome/kola/blob/main/py-kola/benchmark.md
  • better deserialization performance using parallel computing
• support Python 3.12 without changing code
• a much bigger polars community to support dataframe interface
  • most machine learning packages are going to support polars directly
  • better performance for converting data to numpy/pandas
• no need to know kdb+/q knowledge for Python developers