明明就没有错误，Python总是提示语法错误，我用的是Jupyter Notebook

import numpy as np
import matplotlib.pyplot as plt
from numpy import linalg as LA
from sklearn.cluster import KMeans
from sklearn.datasets import make_blobs
from sklearn.metrics.pairwise import rbf_kernel
from sklearn.preprocessing import normalize
data = np.loadtxt('E:\machine learning\wholesale.txt')
def distance(x,y):
return ((x-y)**2)**0.5

File "<ipython-input-9-b6e9bf3d9f41>", line 2
import matplotlib.pyplot as plt
^
SyntaxError: invalid syntax

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