getattr nested attributes

[Gregor Horvath]

Peter Otten schrieb:

> make your own function that loops over the attributes, or spell it
> 
>>>> reduce(getattr, "a.test".split("."), B)
> 'test'
> 

Thank's, but this does not work for this case:

class A(object):
     test = "test"

class B(object):
     a = [A(),]

In [70]: reduce(getattr, "a[0].test".split("."), B)
---------------------------------------------------------------------------
<type 'exceptions.AttributeError'>        Traceback (most recent call last)

/<ipython console> in <module>()

<type 'exceptions.AttributeError'>: type object 'B' has no attribute 'a[0]'

Seems that I have to use eval ?
I have a mapping text file (data) which contains such attributes strings 
and those attributes should be read.

--
Greg