Python:实现k nearest neighbours k最近邻分类算法
from collections import Counter
import numpy as np
from sklearn import datasets
from sklearn.model_selection import train_test_split
data = datasets.load_iris()
X = np.array
from collections import Counter
import numpy as np
from sklearn import datasets
from sklearn.model_selection import train_test_split
data = datasets.load_iris()
X = np.array