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Python Pandas - Indicate duplicate index values
To indicate duplicate index values, use the index.duplicated() method.
At first, import the required libraries −
import pandas as pd
Creating the indexwith some duplicates −
index = pd.Index(['Car','Bike','Airplane','Ship','Airplane'])
Display the index −
print("Pandas Index with duplicates...\n",index)Indicate duplicate index values as True, rest False. By default, it keeps the first occurrence of the duplicate value unmarked −
print("\nIndicating duplicate values...\n", index.duplicated())
Example
Following is the code −
import pandas as pd
# Creating the index with some duplicates
index = pd.Index(['Car','Bike','Airplane','Ship','Airplane'])
# Display the index
print("Pandas Index with duplicates...\n",index)
# Return the dtype of the data
print("\nThe dtype object...\n",index.dtype)
# get the dimensions of the data
print("\nGet the dimensions...\n",index.ndim)
# Indicate duplicate index values as True, rest False
# By default it keeps the first occurrence of the duplicate value unmarked
print("\nIndicating duplicate values...\n", index.duplicated())Output
This will produce the following code −
Pandas Index with duplicates... Index(['Car', 'Bike', 'Airplane', 'Ship', 'Airplane'], dtype='object') The dtype object... object Get the dimensions... 1 Indicating duplicate values... [False False False False True]
Updated on: 13-Oct-2021
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