To create a MultiIndex, use the pandas.MultiIndex.from_arrays() method. To set names of each of the index levels, use the names parameter.
At first, import the required libraries −
import pandas as pd
MultiIndex is a multi-level, or hierarchical, index object for pandas objects. Create arrays −
arrays = [[1, 2, 3, 4, 5], ['John', 'Tim', 'Jacob', 'Chris', 'Keiron']]
The "names" parameter sets the names for each of the index levels. The from_arrays() is used to create a Multiindex −
multiIndex = pd.MultiIndex.from_arrays(arrays, names=('ranks', 'student'))
Display the Multiindex −
print("The Multi-index...\n",multiIndex)
Get the names of levels in Multiindex −
print("\nThe names of levels in Multi-index...\n",multiIndex.names)
Example
Following is the code −
import pandas as pd # MultiIndex is a multi-level, or hierarchical, index object for pandas objects # Create arrays arrays = [[1, 2, 3, 4, 5], ['John', 'Tim', 'Jacob', 'Chris', 'Keiron']] # The "names" parameter sets the names for each of the index levels # The from_arrays() is used to create a Multiindex multiIndex = pd.MultiIndex.from_arrays(arrays, names=('ranks', 'student')) # display the Multiindex print("The Multi-index...\n",multiIndex) # get the names of levels in Multiindex print("\nThe names of levels in Multi-index...\n",multiIndex.names)
Output
This will produce the following output −
The Multi-index... MultiIndex([(1, 'John'), (2, 'Tim'), (3, 'Jacob'), (4, 'Chris'), (5, 'Keiron')], names=['ranks', 'student']) The names of levels in Multi-index... ['ranks', 'student']