# -*- coding: utf-8 -*- from sklearn.datasets import load_irisli = load_iris()print("獲取特征值") print(li.data) print("目標(biāo)值") print(li.target) print(li.DESCR)

# -*- coding: utf-8 -*- from sklearn.datasets import load_iris from sklearn.model_selection import train_test_splitli = load_iris()# print("獲取特征值") # print(li.data) # print("目標(biāo)值") # print(li.target) # print(li.DESCR)# 注意返回值，訓(xùn)練集 train x_train,y_train 測試集 test x_test,y_test x_train,x_test,y_train,y_test = train_test_split(li.data,li.target,test_size=0.25) print("訓(xùn)練集特征值和目標(biāo)值：",x_train,y_train) print("測試集特征值和目標(biāo)值：",x_test,y_test)

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# -*- coding: utf-8 -*- from sklearn.datasets import load_iris,fetch_20newsgroups from sklearn.model_selection import train_test_splitli = load_iris()news = fetch_20newsgroups(subset="all") print(news.data) print(news.target)

# -*- coding: utf-8 -*- from sklearn.datasets import load_iris,load_boston from sklearn.model_selection import train_test_splitli = load_iris()lb = load_boston() print("獲取特征值") print(lb.data) print("獲取目標(biāo)值") print(lb.target) print("描述") print(lb.DESCR)

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