how to get first value of a column in pandas in python

main.py
        ```
        import pandas as pd

        df = pd.read_csv('data.csv')

        first_value = df['column_name'].iloc[0]
        ```

        In the above example, replace 'data.csv' with the name of your CSV file and 'column_name' with the name of the column you want to get the first value of.
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