PEP 289: Generator Expressions (please comment)

[Chris Wright]

PEP 289 proposes stuff like 

>     sum(x*x for x in roots)
>     min(d.temperature()*9/5 + 32 for d in days)
>     Set(word.lower() for word in text.split() if len(word) < 5)
>     dict( (k, somefunc(k)) for k in keylist )
>     dotproduct = sum(x*y for x,y in itertools.izip(xvec, yvec))
>     bestplayer, bestscore = max( (p.score, p.name) for p in players )


and it seems that it's been accepted. 

I meekly accept the judgement of BDFL, but have a sneaking suspicion
that we're on the way to re-inventing the LOOP macro here!

I can see the appeal, but fear where it might lead us ...

cheers

Chris Wright