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Pandas DataFrame | lookup method

Pandas
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Documentation
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DataFrame
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Data Selection and Renaming
schedule Jul 1, 2022
Last updated
local_offer PythonPandas
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Pandas DataFrame.lookup(~) method extracts individual values from the source DataFrame in a single Numpy Array.

Parameters

1. row_labels | sequence of strings

The row labels of the values you want to fetch.

2. col_labels | sequence of strings

The column label of the values you want to fetch.

Return Value

A Numpy array of values.

Examples

Consider the following DataFrame:

df = pd.DataFrame({"A":[5,8],"B":[6,7],"C":[2,9]}, index=["a","b"])
df
A B C
a 5 6 2
b 8 7 9

To fetch the values at (a,B) and (b,C):

df.lookup(row_labels=["a","b"], col_labels=["B","C"])
array([6, 9])
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Published by Isshin Inada
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