from sklearn.datasets import load_iris import numpy as np
import matplotlib.pyplot as plt
#提取花瓣长度和花瓣宽度作为特征变量
x=load_iris().data[:,2:4]
#使用Matplotlib绘制样本散点图5分
plt.scatter(x[:,0],x[:,1],s=30,c='9',marker='o') plt.rcParams['font.sans-serif']='Simhei' plt.xlabel('花瓣长度) plt.ylabel('花瓣宽度') plt.show()