zxq997
2019-06-25 阅读量: 707
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
s=pd.Series([1,3,5,np.nan,6,8])
dates=pd.date_range('20130101',periods=6)
df=pd.DataFrame(np.random.rand(6,4),index=dates,columns=list('ABCD'))