knn分类iris数据 题目 Sklearn中的datasets方法导入iris鸢尾花训练样本并用train_test_split产生测试样本,用KNN分类并输出分类精度。 data = sklearn.datasets.iris.data label = sklearn.datasets.iris.target 输出 代码 from sklearn import datasets from sklearn.metrics import accuracy_score from sklearn.model_selection import train_test_split from sklea