def METHOD_NAME(**kwargs) :
    for name, l in kwargs.items() :
        newline_list = f'{l[0]:.1f}\n' + '\n'.join([f'                {v:.1f}' for v in l[1:]])
        print(f'<matrix name="{name}"')
        print( '        coldim="1"')
        print(f'        values="{newline_list}"/>')