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Making DataFrame string column lowercase in Python

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Data Manipulation Cookbook
schedule Jul 1, 2022
Last updated
local_offer PythonPandas
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We can making a DataFrame string column lowercase in Python using the str.lower() method.

Examples

Consider the following DataFrame:

df = pd.DataFrame({"A": ["HELLO", "Friend"], "B": ["Sky", "ToWnEr"]})
df
A B
0 HELLO Sky
1 Friend ToWnEr

To convert strings in column "A" to lowercase:

df["A"] = df["A"].str.lower()
df
A B
0 hello Sky
1 friend ToWnEr
robocat
Published by Arthur Yanagisawa
Edited by 0 others
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