This project is a Python toolkit developed by Goldman Sachs for quantitative trading. It is a Python library specifically designed for the field of quantitative finance, which has been used internally at Goldman Sachs for many years, supporting the development of quantitative trading strategies, analysis and visualization of financial data, and risk management features. This library is highly integrated with Goldman Sachs' services, and professional features such as market data and models provided by the bank cannot be used without logging in.