check pandas version
import pandas as pd
pd.__version__pandas
df = pd.DataFrame(np.random.randn(1000, 4), index=ts.index,
.....: columns=['A', 'B', 'C', 'D'])
.....:
In [137]: df = df.cumsum()
In [138]: plt.figure()
Out[138]: <Figure size 640x480 with 0 Axes>
In [139]: df.plot()
Out[139]: <matplotlib.axes._subplots.AxesSubplot at 0x7f53723daa10>
In [140]: plt.legend(loc='best')
Out[140]: <matplotlib.legend.Legend at 0x7f5369d93dd0>Copyright © 2021 Codeinu
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