How to select from a multi-indexed Pandas DataFrame in Python

A Pandas.DataFrame can be multi-indexed/hierarchal: an outer index can have multiple sets of indexed data. Selecting the data from a DataFrame outer index will return the data it encompasses.

Solution for How to select from a multi-indexed Pandas DataFrame in Python : You can use pandas.DataFrame.xs() to select data at a particular level of a multi-index DataFrame.Call DataFrame.xs(‘outer_index’) to return a cross-section of rows from DataFrame that correspond to the specified outer_index.

Further reading:

DataFrame.xs() has more arguments that allow more specified ways to select data from multi-index DataFrames . You can read more about those different arguments here.


how-to-select-from-a-multi-indexed-pandas-dataframe-in-python