En Thu, 12 Feb 2009 00:02:12 -0200, <mark.sea...@gmail.com> escribió:
On Feb 11, 5:51 pm, Marc 'BlackJack' Rintsch <bj_...@gmx.net> wrote:On Wed, 11 Feb 2009 17:33:23 -0800, mark.seagoe wrote:
> Not sure what generic attribute container is. I am reading in from > xml file all reg names for a chip.Are you using instances of that class to interface C code or to read/ write data intended to be read or written by a C program? If not then `ctypes` might be the wrong tool.It's accessing through USB so I'm also interfacing to Win32 drivers. But at this higher level, since I'm somewhat new to Python so I'm not aware of other classes which exist to allow accessing in the format desired (without quotes and using dot notation): classname.elementname1, instead of something like classname ["elementname1"]. It's just cosmetic, but I'd prefer the dot notation without quotes for the end user experience of script writing later. Is there something besides ctypes.Structure that would do that?
You don't need *anything* special to add attributes to an object in Python. Even an empty class is enough:
py> class Struct(object): ... pass # an empty class ... py> s = Struct() py> s.x = 10 py> s.y = 20 py> print s.x, s.y 10 20 py>But since this thread started asking how to iterate over the attributes, let's use a named tuple:
py> from collections import namedtuple
py> StructWithNames = namedtuple("StructWithNames", "x,y,z")
py> s = StructWithNames(10, 20, 30)
py> s.z
30
py> s
StructWithNames(x=10, y=20, z=30)
py> list(s)
[10, 20, 30]
py> for item in s: print item
...
10
20
30
py> s._fields
('x', 'y', 'z')
--
Gabriel Genellina
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