pandas透视表无法运行

Terence888

jupyternotebook环境下运行python代码，如下：

1. import numpy as np
   
2. import pandas as pd
   
3. from pandas import Series, DataFrame
   
4. !dir C:\Users\Thinkpad\coding-156-master\coding-156\homework
   
5. df = pd.read_excel(r'C:\Users\Thinkpad\coding-156-master\coding-156\homework\sales-funnel.xlsx')
   
6. pd.pivot_table(df,values=['Price'],index=['Name'],aggfunc='mean')

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代码运行到这步，出现了如图片所示的错误，大佬们帮忙看看是什么原因