Python Pandas - Return the label from the index or if not present, the previous one

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To return the label from the index or if not present, the previous one, use the index.asof() method in Pandas.

At first, import the required libraries −

import pandas as pd

Creating Pandas index −

index = pd.Index([10, 20, 30, 40, 50, 60, 70])

Display the Pandas index −

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

Return the label from the index or if not present, the previous one −

print("\nGet the label from the index...\n",index.asof(43))

Example

Following is the code −

import pandas as pd

# Creating Pandas index
index = pd.Index([10, 20, 30, 40, 50, 60, 70])

# 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 label from the index or if not present, the previous one
print("\nGet the label from the index...\n",index.asof(43))

Output

This will produce the following output −

Pandas Index...
Int64Index([10, 20, 30, 40, 50, 60, 70], dtype='int64')

Number of elements in the index...
7

Get the label from the index...
40
raja
Updated on 14-Oct-2021 07:28:50

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