[ x for x in xrange(10) when p(x) ]

[Colin J. Williams]

Alex Martelli wrote:
> George Sakkis <gsakkis at rutgers.edu> wrote:
>    ...
> 
>>>>FP functions like dropwhile/takewhile etc.
>>>
>>>No way -- the itertools module is and remains a PRECIOUS resource.
>>>If you want an iterator rather than a list, itertools.ifilter is quite
>>>appropriate here.
>>
>>What about the future of itertools in python 3K ? IIRC, several
>>functions and methods that currently return lists are going to return
>>iterators. Could this imply that itertools.(imap/ifilter/izip) will
>>take the place of map/filter/zip as builtins ?
> 
> 
> I think the builtin namespace shouldn't get too crowded.  But what I
> think matters little -- what __GvR__ thinks is more important...!-)
> 
> 
> Alex
Are there generally accepted guidelines on what is appropriate for the 
builtin namespace?

Colin W.