>>>
>>> scalar = 111111.234567
>>> list = [ 1, 'あいうえお' ]
>>> dict = {'key': 'value', 2: 1002 }
>>>
>>> "{ } scalar: %.3f  array[0]: %05d  hash['key']: %s" % (scalar, list[0], dict['key'])
"{ } scalar: 111111.235  array[0]: 00001  hash['key']: value"
>>>
>>> "{{ }} scalar: {0:.3f}  array[0]: {1[0]:05d}  hash['key']: {2[key]:s}".format(scalar, list, dict)
"{ } scalar: 111111.235  array[0]: 00001  hash['key']: value"
>>>