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Pandas DataFrame | add_prefix method

schedule Aug 12, 2023
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Pandas DataFrame.add_prefix(~) prepends the specified string to each column label of the DataFrame.

Parameters

1. prefix | string

The string to prepend to each column label.

Return Value

A new DataFrame with the specified prefix prepended to the column labels.

Examples

Consider the following DataFrame:

df = pd.DataFrame({"A":[1,2], "B":[3,4]})
df
A B
0 1 3
1 2 4

To add "C" before each column label:

df.add_prefix("C")
CA CB
0 1 3
1 2 4

Note that the original df is left intact since add_prefix(~) creates a new DataFrame.

robocat
Published by Isshin Inada
Edited by 0 others
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