In pandas, how can I reset index without adding a new column?

Question

In [37]: df = pd.DataFrame([[1, 2, 3, 4], [2, 3, 4, 5], [3, 4, 5, 6]])  In [38]: df2 = pd.concat([df, df])  In [39]: df2.reset_index() Out[39]:     index  0  1  2  3 0      0  1  2  3  4 1      1  2  3  4  5 2      2  3  4  5  6 3      0  1  2  3  4 4      1  2  3  4  5 5      2  3  4  5  6 

My problem is that how can I reset_index without adding a new column index?

Answer 1

You can use the drop=True option in reset_index(). See here.