how to get index of pandas dataframe python

1In [45]: df = DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
2
3In [46]: df.columns
4Out[46]: Index([apple, orange, pear], dtype=object)
5
6In [47]: df.columns.get_loc("pear")
7Out[47]: 2
8

1In [48]: a
2Out[48]: 
3   c1  c2
40   0   1
51   2   3
62   4   5
73   6   7
84   8   9
9
10In [49]: a.c1[a.c1 == 8].index.tolist()
11Out[49]: [4]

1DataFrame.index

1import pandas as pd
2
3df = pd.DataFrame(
4    [[88, 72, 67],
5    [23, 78, 62],
6    [55, 54, 76]],
7    index=[2, 4, 9],
8    columns=['a', 'b', 'c'])
9
10index = df.index
11print(index)