莫烦python教程学习笔记——使用鸢尾花数据集

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"""
Please note, this code is only for python 3+. If you are using python 2+, please modify the code accordingly.
"""
from __future__ import print_function
from sklearn import datasets
from sklearn.model_selection import train_test_split
from sklearn.neighbors import KNeighborsClassifier

iris = datasets.load_iris()
iris_X = iris.data
iris_y = iris.target

##print(iris_X[:2, :])
##print(iris_y)

X_train, X_test, y_train, y_test = train_test_split(
iris_X, iris_y, test_size=0.3)

##print(y_train)

knn = KNeighborsClassifier()
knn.fit(X_train, y_train)
print(knn.predict(X_test))
print(y_test)