为pandas DataFrame 生成多序列条状图

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
data = {'series1':[1,3,4,3,5],

'series2':[2,4,5,2,4],

'series3':[3,2,3,1,3]}
df = pd.DataFrame(data)
df.plot(kind='barh')
plt.show()