py3k - format specifier for strings

["Martin v. Löwis"]

>>>> a = "{0}".format(5.66)
>>>> a
> '5.66'
> 
> There are more options in PEP 3101 (fill, alignment, etc.), but I'm having
> trouble implementing them.

It would be good if you could describe these troubles in more detail.
What have you been trying, what happened, and what did you expect to
happen instead?

> Any help in the way of examples would be appreciated.

>From test_unicode.py:

"My name is {0}".format('Fred')
"My name is {0[name]}".format(dict(name='Fred')
"My name is {0} :-{{}}".format('Fred')

d = datetime.date(2007, 8, 18)
"The year is {0.year}".format(d)

'{0:.3s}'.format('abc')
'{0:.0s}'.format('abcdef')
'{0:3.3s}'.format('abc')
'{0:3.2s}'.format('abc')
'{0:x<0s}'.format('result')
'{0:x<7s}'.format('result')
'{0:^10s}'.format('result')
'{0!s}'.format('Hello')
'{0!s:15s}'.format('Hello')
'{0!r:}'.format('Hello')

Regards,
Martin