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List:       python-list
Subject:    Re: map/filter/reduce/lambda opinions and background unscientific
From:       Steven Bethard <steven.bethard () gmail ! com>
Date:       2005-07-08 17:03:54
Message-ID: oL-dnRYPEKJlLFPfRVn-gA () comcast ! com
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Christopher Subich wrote:
> Ron Adam wrote:
>> I think the association of (lambda) to [list_comp] is a nice 
>> distinction.  Maybe a {dictionary_comp} would make it a complete set. ;-)
> 
> Yeah, dictionary comprehensions would be an interesting feature. :) 
> Syntax might be a bit unwieldy, though, and I doubt they'd be used often 
> enough to be worth implementing, but still neat.

Dict comprehensions were recently rejected:
     http://www.python.org/peps/pep-0274.html
The reason, of course, is that dict comprehensions don't gain you much 
at all over the dict() constructor plus a generator expression, e.g.:
     dict((i, chr(65+i)) for i in range(4))

STeVe
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