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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_bounding_box(df_points):
    '''
    Calculate the bounding box of all points in a data frame.
    '''
    xy_min = df_points[['x', 'y']].min()
    xy_max = df_points[['x', 'y']].max()

    wh = xy_max - xy_min
    wh.index = 'width', 'height'
    bbox = pd.concat([xy_min, wh])
    bbox.name = 'bounding_box'
    return bbox