[Python] df.to_csv() giving *** TypeError: slice indices must be integers or None or have an...

I get the above error when i try df2.to_csv('abc.csv').

More details:

(Pdb) type(df2)
<class 'pandas.core.frame.DataFrame'>
(Pdb) df2
0x01 0x03 0x07 0x0f 0x1f 0x3f 0x7f
0 2 NaN NaN NaN NaN NaN NaN
1 10 2 5 2 4 4 NaN
2 26 4 17 16 25 10 1
3 12 11 25 13 31 21 7
4 10 37 24 22 18 37 33
5 10 39 23 21 13 15 27
6 22 7 5 11 5 3 23
7 8 NaN NaN 4 3 3 6
8 NaN NaN 1 11 1 7 3

[9 rows x 7 columns]
(Pdb) df2.to_csv('abc.csv')
*** TypeError: slice indices must be integers or None or have an __index__ method
(Pdb)


I am not slicing anything ... so the error makes no sense.

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