Python Pandas - Getting values from a specific level in Multiindex

To get values from a specific level in Multiindex, use the multiIndex.get_level_values() method in Pandas.

At first, import the required libraries −

import pandas as pd

Create a multi-index. The names parameter sets the names for the levels in the index

multiIndex = pd.MultiIndex.from_arrays([[5, 10], [15, 20], [25, 30], [35, 40]], names=['a', 'b', 'c', 'd'])

Get value from specific value. Get 0^th level value −

print("\nGet level value (0th level)...\n",multiIndex.get_level_values(0)) 

Get 1^st level value −

print("\nGet level value (1st level)...\n",multiIndex.get_level_values(1))

Example

Following is the code −

import pandas as pd # Create a multi-index # The names parameter sets the names for the levels in the index multiIndex = pd.MultiIndex.from_arrays([[5, 10], [15, 20], [25, 30], [35, 40]], names=['a', 'b', 'c', 'd']) print("Multi-index...\n",multiIndex) # get 0th level value print("\nGet level value (0th level)...\n",multiIndex.get_level_values(0)) # get 1st level value print("\nGet level value (1st level)...\n",multiIndex.get_level_values(1)) # dropping a level from the multiindex print("\nDropping a level...\n",multiIndex.droplevel())

Output

This will produce the following output −

Multi-index... MultiIndex([( 5, 15, 25, 35), (10, 20, 30, 40)], names=['a', 'b', 'c', 'd']) Get level value (0th level)... Int64Index([5, 10], dtype='int64', name='a') Get level value (1st level)... Int64Index([15, 20], dtype='int64', name='b') Dropping a level... MultiIndex([(15, 25, 35), (20, 30, 40)], names=['b', 'c', 'd'])