On Jun 15, 9:33 am, Olivier LEMAIRE <m.olivier.lema...@gmail.com> wrote: > You're right, I use Python 2.6.6
This works great in 2.6.5 and later (and probably earlier). You just have to number your placeholders. The first set of braces formats i (your value), the second set specifies the field with (i.e., 8): >>> for i in xrange(10): ... print "{0:0{1}b}".format(i,8) ... 00000000 00000001 00000010 00000011 00000100 00000101 00000110 00000111 00001000 00001001 -- http://mail.python.org/mailman/listinfo/python-list