Hello Tommy,
I would like to do such convertings, too, but I think there is no such fast
way in python. I'm using the 'for statement' to iterate over a list of
objects and save their properties into a new list.
best regards,
Matthias
On Friday 04 May 2007 17:54, Tommy Grav wrote:
> I have some code that simplified looks like this:
>
> class cKBO(object):
> def __init__(cls):
> cls.a = 0.
> cls.e = 0.
>
> lines = open("test.file","r").readlines()
>
> nlist = []
> for line in lines:
> obj = cKBO()
> (a,e) = line.split
> obj.a = float(a)
> obj.e = float(e)
> nlist.append(obj)
>
> I would now like to plot a vs e for all the obj objects in nlist.
> how do I do that? I tried
>
> plot(nlist[:].a,nlist[:].e,'ko')
> show()
>
> but that resulted in
> raceback (most recent call last):
> File "/Users/tgrav/Work/MyCode/Python/MOPS/ckbos.py", line 108, in ?
> plot(nlist[:].a,nlist[:].e,'ko')
> AttributeError: 'list' object has no attribute 'a'
>
> Which is understandable. But how do I most easily convert a list of
> class
> objects into two lists of object variables?
>
> Cheers
> Tommy
>
>
>
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