looping over a class attribute

[biner]

Hello,
I would like to be able to make a loop over a given class
attributes. For example, with the following class definition :
[color=blue][color=green][color=darkred]
>>> class x:[/color][/color][/color]
.... val1=1
.... val2=2
....[color=blue][color=green][color=darkred]
>>> print x.val1[/color][/color][/color]
1[color=blue][color=green][color=darkred]
>>> print x.val2[/color][/color][/color]
2

I would like to be able to make a loop like this[color=blue][color=green][color=darkred]
>>> dir(x)[/color][/color][/color]
['__doc__', '__module__', 'val1', 'val2'][color=blue][color=green][color=darkred]
>>> for i in dir(x) : print x.i[/color][/color][/color]

and get an output like typing

print x.__doc__
print x__module__
print x.var1
print x.var2

instead of

Traceback (most recent call last):
File "<stdin>", line 2, in ?
AttributeError: class x has no attribute 'i'

Is there a way to do this? Thanks in advance from a clueless newbie to
the wonderful world of Python and OO programming.

Sebastien.
biner.sebastien @ouranos.ca

[Aahz]

Re: looping over a class attribute

In article <b82e5469.04031 21359.f099aa8@p osting.google.c om>,
biner <biner.sebastie n@ouranos.ca> wrote:[color=blue]
>
>I would like to be able to make a loop like this[color=green][color=darkred]
>>>> dir(x)[/color][/color]
>['__doc__', '__module__', 'val1', 'val2'][color=green][color=darkred]
>>>> for i in dir(x) : print x.i[/color][/color][/color]

print getattr(x, i)
--
Aahz (aahz@pythoncra ft.com) <*> http://www.pythoncraft.com/

"usenet imitates usenet" --Darkhawk

[Dave Benjamin]

Re: looping over a class attribute

In article <b82e5469.04031 21359.f099aa8@p osting.google.c om>, biner wrote:[color=blue]
> I would like to be able to make a loop like this[color=green][color=darkred]
>>>> dir(x)[/color][/color]
> ['__doc__', '__module__', 'val1', 'val2'][color=green][color=darkred]
>>>> for i in dir(x) : print x.i[/color][/color][/color]

Like Aahz said, getattr(x, i) is your ticket. However, keep in mind that the
behavior of dir() is not guaranteed across current and future versions of
Python. You may have better luck using x.__dict__.keys () - or in Python 2.3,
you can get away with this:

for i in x.__dict__: print getattr(x, i)

Since dictionaries are their own key-iterators now.

--
..:[ dave benjamin: ramen/[sp00] -:- spoomusic.com -:- ramenfest.com ]:.
: please talk to your son or daughter about parametric polymorphism. :