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

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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']]
raja
Published on 19-Oct-2021 07:00:25
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