Inheritance from builtin list and override of methods.

[Michalis Giannakidis]

On Monday 27 November 2006 11:50, Fredrik Lundh wrote:

> "obj[index] = value" maps to "obj.__setitem__(index, value)".  reading
> the documentation might help; start here:
>
>      http://docs.python.org/ref/specialnames.html

In this documentation page it also says:
--snip---
then x[i] is equivalent3.2 to x.__getitem__(i). 
--snip--
This, and other statements, are only roughly true for instances of new-style 
classes. 
--snip--

So which statements are actually true for new style classes? 

Is l[0]=1 completely different from l.append(1) or maybe insert?

And is there a mechanism in Python that will allow me to override the 
operators of a class, for all its occurrences, even the ones implemented on C 
built-in objects?


-- 
Michalis Giannakidis