说明： 文件为房价预测例子的一元线性回归模型代码及数据，由sklearn库实现，将数据文件与程序文件放在同一目录下运行即可。 (The file is a linear regression model code and data for the example of house price forecasting. It is implemented by the sklearn library, and the data file and the program file are placed in the same directory to run.)
