Misuse of list comprehensions?

[Gabriel Genellina]

En Tue, 27 May 2008 14:43:52 -0300, Ian Kelly <ian.g.kelly at gmail.com>  
escribió:

> It sounds like the wasteful list creation is the biggest objection to
> using a list comprehension.  I'm curious what people think of this
> alternative, which avoids populating the list by using a generator
> expression instead (apart from the fact that this is still quadratic,
> which I'm aware of).
>
> def compress(s):
>    new = []
>    filter(None, (new.append(c) for c in s if c not in new))
>    return ''.join(new)

filter returns a newly created list, so this code is as wasteful as a list  
comprehension (and harder to read).

-- 
Gabriel Genellina