[Python-ideas] Fwd: New suggested built in keyword: do

Jamie Willis jw14896.2014 at my.bristol.ac.uk
Fri Jun 8 11:08:00 EDT 2018


What about just supporting filtering syntax at the top level?

for x range(50) if x % 2: print(x)

It's a minor syntactic change which is very flexible and consistent with
the existing comprehension syntax. Could even extend to allow multiple
iterators as per a comprehension

On Fri, 8 Jun 2018, 15:59 Jacco van Dorp, <j.van.dorp at deonet.nl> wrote:

> Given that an exhaust method for generators didn't make it, I dont
> think a keyword has more chance. For reference, that exhaust method
> would have looked like:
>
> (print (x) for x in range(50)).exhaust()
>
> and be defined as:
>
> def exhaust(self):
>     for _ in self:
>        pass
>
> Also, there was some more involved method that did it in less
> characters, having to do with queues of length 0 or something.
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