On Tue, Jul 03, 2018 at 04:12:14PM +0200, Nicolas Rolin wrote:
> I agree the examples have lisp-level of brackets. However by using the fact
> tuples don't need brackets and the fact we can use a list instead of an
> iterable (the grouper will have to stock the whole object in memory anyway,
> and if it is really big, use itertools.groupby who is designed exactly for
> that)
> For example
> grouping(((len(word), word) for word in words))
> can be written
> grouping([len(word), word for word in words])
>
> which is less "bracket issue prone".
Did you try this? It is a syntax error. Generator expressions must be
surrounded by round brackets:
grouping([len(word), (word for word in words)])
Or perhaps you meant this:
grouping([(len(word), word) for word in words])
but now it seems pointless to use a list comprehension instead of a
generator expression:
grouping((len(word), word) for word in words)
but why are we using key values by hand when grouping ought to do it for
us, as Michael Selik's version does?
grouping(words, key=len)
--
Steve
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