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Checking if value exists in Index in Pandas DataFrame

schedule Aug 12, 2023
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To check if a value exists in the Index of a Pandas DataFrame, use the in keyword on the index property.

Consider the following DataFrame:

df = pd.DataFrame({"A":[3,4]}, index=["a","b"])
df
A
a 3
b 4

To check whether or not index a exists in df:

"a" in df.index
True

To check whether or not index c exists in df:

"c" in df.index
False
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Published by Isshin Inada
Edited by 0 others
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