[Python-Dev] for loop with if filter (original) (raw)
Gustavo Carneiro gjcarneiro at gmail.com
Fri Nov 16 15:35:56 CET 2007
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On 16/11/2007, Benji York <benji at benjiyork.com> wrote:
Gustavo Carneiro wrote: > I am finding myself often doing for loops over a subset of a list, like: > > for r in results: > if r.numNodes != numNodes: > continue > # do something with r > > It would be nice if the plain for loop was as flexible as list comprehensions > and allowed an optional if clause, like this: > > for r in results if r.numNodes == numNodes: > # do something with r You can do the same today, sans sugar: for r in (s for s in results if s.numNodes == numNodes): # do something with r
Yes, I can do that, as well as I can use the 'continue' statement, but both versions are slightly more verbose and less clear than what I propose.
-- Gustavo J. A. M. Carneiro INESC Porto, Telecommunications and Multimedia Unit "The universe is always one step beyond logic." -- Frank Herbert -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.python.org/pipermail/python-dev/attachments/20071116/28fd6ca5/attachment.htm
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