How do I change the index of an existing data frame?

How do I change the index of a data frame?

To reset the index in pandas, you simply need to chain the function . reset_index() with the dataframe object. On applying the . reset_index() function, the index gets shifted to the dataframe as a separate column.

How do I change the index of a DataFrame label?

You can use the rename() method of pandas. DataFrame to change column/index name individually. Specify the original name and the new name in dict like {original name: new name} to columns / index argument of rename() . columns is for the columns name, and index is for the index name.

How do I change the index of a column?

If you want to keep the original index as a column, use reset_index() to reassign the index to a sequential number starting from 0 . You can change the index to a different column by using set_index() after reset_index() .

How do you modify a data frame?

1Rename columns. Use rename() method of the DataFrame to change the name of a column. ... 2Add columns. You can add a column to DataFrame object by assigning an array-like object (list, ndarray, Series) to a new column using the [ ] operator. ... 3Delete columns. In [7]: ... 4Insert/Rearrange columns. ... 5Replace column contents.