dataframe index column invert

You're looking for the transpose (T) method

In [11]: df
Out[11]:
         10  20  30  70
data1:  2.3   5   6   7

In [12]: df.T
Out[12]:
    data1:
10     2.3
20     5.0
30     6.0
70     7.0

In [11]: df
Out[11]:
         10  20  30  70
data1:  2.3   5   6   7

In [12]: df.T
Out[12]:
    data1:
10     2.3
20     5.0
30     6.0
70     7.0