How to rename column header of a Pandas DataFrame?

## How to rename column header of a Pandas DataFrame
def Snippet_102():
    print()
    print(format('How to rename column header of a Pandas DataFrame','*^82'))

    import warnings
    warnings.filterwarnings("ignore")

    # load libraries
    import pandas as pd

    # Create a values as dictionary of lists
    raw_data = {'0': ['first_name', 'Molly', 'Tina', 'Jake', 'Amy'],
                '1': ['last_name', 'Jacobson', 'Ali', 'Milner', 'Cooze'],
                '2': ['age', 52, 36, 24, 73],
                '3': ['preTestScore', 24, 31, 2, 3]}

    # Create a dataframe
    df = pd.DataFrame(raw_data)

    # View a dataframe
    print(); print(df)

    # Create a new variable called 'header' from the first row of the dataset
    header = df.iloc[0]
    print(); print(header)

    # Replace the dataframe with a new one which does not contain the first row
    df = df[1:]
    print(); print(df)

    # Rename the dataframe's column values with the header variable
    df = df.rename(columns = header)
    print(); print(df)

Snippet_102()