Inside Bank Python: How investment banks built proprietary forks of the Python ecosystem
By
Cal Paterson
Summary
An in-depth exploration of "Bank Python" — proprietary forks of the Python ecosystem used by major investment banks. The article details how these systems differ from standard Python, including custom libraries, performance constraints, regulatory requirements, and unique engineering practices that have evolved in the high-finance environment. It covers the historical development, key technical differences, and the cultural divide between standard software engineering and banking tech.
Source
Hacker NewsInside Bank Python: How investment banks built proprietary forks of the Python ecosystemcalpaterson.comKey quotes
· 3 pulledHigh finance is a foreign country; they do things differently there
Bank Python implementations are effectively proprietary forks of the entire Python ecosystem which are in use at many (but not all) of the biggest investment banks.
The strange world of Python, as used by big investment banks
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