我的代码：
import pandas as pd
import numpy as np
from sklearn.cluster import KMeans

data=pd.read_csv(r'D:\学习\机器学习实验\iris.csv')

print(data)

petal_width_data=data['petal width (cm)']
sepal_width_data=data['sepal width (cm)']
petal_width_data=np.array(petal_width_data)
sepal_width_data=np.array(sepal_width_data)
datA=np.vstack((petal_width_data,sepal_width_data)).T

print(datA)

datA=[[i]for i in datA]
junei=KMeans(n_clusters=5)
junei.fit(junei)
label=junei.labels_
center=junei.cluster_centers_
print(label)
print(center)

错误提示：