python中画柱状图时TypeError: unsupported operand type(s) for -: 'str' and 'float'

Question

求解答！这个怎么解决啊本来能运行换了anacondas3 就出现这样错误l！

Answer 1

写成这样：

import pandas as pd
import matplotlib.pyplot as plt
kw=pd.Series([456,389,487,436],index=['python','c++','go','java'])
plt.bar(kw.index,kw.values,data=kw)
plt.show()

另外升级一下matplotlib库，看其中的语法还是python2的用法

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