一次重构，让我处理DataFrame条件逻辑的速度提升了4倍。还记得那个周五的下午，我盯着屏幕上这段代码发呆：df["category"] = np.where(df["score"] > 90, "A", np.where(df["score"] ...

Welcome to the Python Learning Roadmap in 30 Days! This project is designed to guide you through a structured 30-day journey to learn the Python programming language from scratch and master its ...