如下代码import pandas as pda=pd.Series([9, 8, 7, 6], index=['a', 'b',
如下代码
import pandas as pd
a=pd.Series([9, 8, 7, 6], index=['a', 'b', 'c', 'd'])
哪个是print(a.index)的结果?()
A.Index(['a','b','c','d']
B. [9, 8, 7, 6]
C.('a','b','c','d')
D.['a', 'b','c','d']