X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) ...
. ├── main.py # 主程序入口,完整 5 步 Pipeline ├── data_loader.py # 数据加载模块 ├── preprocessing.py # 数据预处理,筛选核心特征 ├── feature_engineering.py # 特征工程,Sex 编码 ├── model_train ...