hi Bruno,
after study it carefully,
it's much more complex than I thought
(I can't understand it completely, which is of less importance).
Your solution works great,
but I need one little extension,
which I can create, but just at the cost of a lot of code.
Maybe you can give me another hint.
> In the first case, this is *really* a binding, and that's one of the few
> things that Python won't let you mess with. In the two last cases, it's
> in fact a method call - as the use of __[get|set]item__ should make
> obvious.
>
> here's an example using a property:
>
> class cpu_ports(object):
> def __init__(self, value=0):
> self._d = value
> @apply
> def value():
> def fset(self, value):
> print 'vv'
> self._d = value
> def fget(self):
> return self._d
> return property(**locals())
# I need to read and write the individual bits of the byte object
# so I can create 8 blocks of code like this, one for each bit position
# I use it, like this
# name1 = cpu_ports()
# name1.p5 = True
# or
# name1.p[5] = True
@apply # read / write bit 5
def p5():
def fset(self, value):
index = 5
value = ( value & 1L ) << index
mask = ( 1L ) << index
self._d = ( self._d & ~mask ) | value
def fget(self):
index = 5
return ( self._d >> index ) & 1
return property(**locals())
I can optimize the above code a little bit,
but I've the feeling that I don't need to repeat this code 8 times.
cheers,
Stef Mientki
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