我第一次尝试在sklearn管道中使用featureunion来组合数字(2列)和文本特征(1列)以进行多类分类。fromsklearn.preprocessingimportFunctionTransformerfromsklearn.pipelineimportPipelinefromsklearn.multiclassimportOneVsRestClassifierfromsklearn.linear_modelimportLogisticRegressionfromsklearn.pipelineimportFeatureUnionget_text_data=Function