fromsklearn.preprocessingimportStandardScaler#数据预处理标准化StandardScaler模型deftest_StandardScaler(): X=[[1,5,1,2,10], [2,6,3,2,7], [3,7,5,6,4,], [4,8,7,8,1]]print("before transform:",X) scaler=StandardScaler() scaler.fit(X)print("scale_ is :",scaler.scale_)print("mean...