Pandas recalculate index after a concatenation

Question

I have a problem where I produce a pandas dataframe by concatenating along the row axis (stacking vertically).

Each of the constituent dataframes has an autogenerat

Answer 1

If your index is autogenerated and you don't want to keep it, you can use the ignore_index option. `

train_df = pd.concat(train_class_df_list, ignore_index=True)

This will autogenerate a new index for you, and my guess is that this is exactly what you are after.