Python Pandas - Set index name for an already created Index object

To set index name for an already created Index object, use the index.set_names() method in Pandas. At first, import the required libraries −

import pandas as pd

Creating Pandas index −

index = pd.Index(["Electronics", "Mobile Phones", "Accessories", "Home Decor", "Books"])

Display the Pandas index −

print("Pandas Index...\n",index)

Set the name of index −

print("\nSet the index name...\n",index.set_names('Products'))

Example

Following is the code −

import pandas as pd

# Creating Pandas index
index = pd.Index(["Electronics", "Mobile Phones", "Accessories", "Home Decor", "Books"])

# Display the Pandas index
print("Pandas Index...\n",index)

# Return the number of elements in the Index
print("\nNumber of elements in the index...\n",index.size)

# Return the dtype of the data
print("\nThe dtype object...\n",index.dtype)

# set the name of index
print("\nSet the index name...\n",index.set_names('Products'))

Output

This will produce the following output −

Pandas Index...
Index(['Electronics', 'Mobile Phones', 'Accessories', 'Home Decor', 'Books'], dtype='object')

Number of elements in the index...
5

The dtype object...
object

Set the index name...
Index(['Electronics', 'Mobile Phones', 'Accessories', 'Home Decor', 'Books'], dtype='object', name='Products')

AmitDiwan

Published on 13-Oct-2021 09:00:52

• Related Questions & Answers
• Python Pandas - Set the name of the index
• Python Pandas - Alter index name
• Python Pandas - Repeat elements of an Index
• Python Pandas - Return the relative frequency from Index object
• Python Pandas - Compute indexer and mask for new index given the current index
• Python Pandas - Fill NaN values with the specified value in an Index object
• How to get column index from column name in Python Pandas?
• Python Pandas - Create an Index based on an underlying Categorical
• Python - Make new Pandas Index with deleting multiple index elements
• Create a Pipeline and remove a row from an already created DataFrame - Python Pandas
• Python Pandas - Indicate duplicate index values
• Python Pandas - Create a DataFrame with both the original index and name
• Python Pandas - Create a Series with both the original index and name
• Python - Check if the Pandas Index is of the object dtype
• Python Pandas - Return number of unique elements in the Index object