Python Pandas - Get the Integer number of levels in this MultiIndex

To get the Integer number of levels in this MultiIndex, use the MultiIndex.nlevels property in Pandas. 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() uis used to create a Multiindex −

multiIndex = pd.MultiIndex.from_arrays(arrays, names=('ranks', 'student'))

Get the integer number of levels in Multiindex −

print("\nThe number of levels in Multi-index...\n",multiIndex.nlevels)

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() uis 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 integer number of levels in Multiindex
print("\nThe number of levels in Multi-index...\n",multiIndex.nlevels)

# get the levels in Multiindex
print("\nThe levels in Multi-index...\n",multiIndex.levels)

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 number of levels in Multi-index...
   2

The levels in Multi-index...
   [[1, 2, 3, 4, 5], ['Chris', 'Jacob', 'John', 'Keiron', 'Tim']]