Python Pandas - Check if the index has unique values

To check if the index has unique values, use the index.is_unique.

At first, import the required libraries −

import pandas as pd

Let us create the index −

index = pd.Index([50, 40, 30, 20, 10]) 

Display the index −

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

Check if the index is having unique values −

print("\nIs the Pandas index having unique values?\n",index.is_unique) 

Example

Following is the code −

import pandas as pd # Creating the index index = pd.Index([50, 40, 30, 20, 10]) # Display the index print("Pandas Index...\n",index) # Return an array representing the data in the Index print("\nArray...\n",index.values) # Check if the index is having unique values print("\nIs the Pandas index having unique values?\n",index.is_unique)

Output

This will produce the following code −

Pandas Index... Int64Index([50, 40, 30, 20, 10], dtype='int64') Array... [50 40 30 20 10] Is the Pandas index having unique values? True