upper method in Pandas

In Pandas, the upper() method is used to convert string values to uppercase. It is typically applied using the .str accessor on Series objects (usually string columns in a DataFrame).

Syntax df['column_name'].str.upper()

Example:

Python

import pandas as pd

df = pd.DataFrame({
    'name': ['alice', 'Bob', 'ChARlie']
})

df['name_upper'] = df['name'].str.upper()
print(df) 

The output of the above code is shown below: