http://blog.boyangyue.com/tags/github/Recent content in GitHub on Boyang YueHugoen-usA Good Year AheadSat, 09 Aug 2025 10:00:00 +0900http://blog.boyangyue.com/2025/08/sharing-a-confidential-python-library-without-pypi/Sat, 09 Aug 2025 10:00:00 +0900http://blog.boyangyue.com/2025/08/sharing-a-confidential-python-library-without-pypi/<p>A quantitative trading system is rarely a single program. A backtester, a live execution engine, and a pile of research notebooks all need the same calculations: volatility scaling, a Sharpe ratio, a handful of instrument models. Copying those functions into each program means fixing every bug several times while the definitions slowly drift apart. A shared library gives them one implementation.</p> <p>Two constraints shape how this library should be distributed. The strategy code should not go to the public package index, and the Git host should not receive the implementation in readable form.</p>