Dataframe Slice does not remove Index Values

Question

I recently had this issue with a large dataframe and its associated multi index. This simplified example will demonstrate the issue.

import pandas as pd
imp         


        

Answer 1

You can make the MultiIndex unique by

df_slice.index = pd.MultiIndex.from_tuples(df_slice.index.unique(), names=idx.names)

which yields the index

MultiIndex(levels=[[u'A', u'B'], [5]],
           labels=[[0, 1], [0, 0]])