def get_csv_fieldnames(self):
    'Return the field names for the CSV file.'
    return ['image_name', 'x_min', 'y_min', 'width', 'height', 'label']
Return the field names for the CSV file.
def get_csv_fieldnames(self):
    
    return ['image_name', 'x_min', 'y_min', 'width', 'height', 'label']