For a locale aware separator, use the ``'n'`` integer presentation type
instead.
+.. versionchanged:: 2.7
+ Added the ``','`` option (see also :pep:`378`).
+
*width* is a decimal integer defining the minimum field width. If not
specified, then the field width will be determined by the content.
Accessing arguments' attributes::
+ >>> c = 3-5j
>>> ('The complex number {0} is formed from the real part {0.real} '
... 'and the imaginary part {0.imag}.').format(c)
'The complex number (3-5j) is formed from the real part 3.0 and the imaginary part -5.0.'