generator object, next method
tjreedy at udel.edu
Thu Sep 8 20:05:13 CEST 2005
"Paul Rubin" <"http://phr.cx"@NOSPAM.invalid> wrote in message
news:7xll282cz4.fsf at ruckus.brouhaha.com...
> Duncan Booth <duncan.booth at invalid.invalid> writes:
>> 1) Every time you access gen.next you create a new method-wrapper
> Why is that? I thought gen.next is a callable and gen.next() actually
> advances the iterator. Why shouldn't gen.next always be the same object?
If you explicitly or implicitly (via for loop) calculate gen.next exact
once (as I presume for loops do, and as I would for explicit while loop),
then it is. When you keep a reference to the wrapper, and call it
repeatedly via that wrapper, then all is as you expect.
next_x = genfunc(*args).next
x = next_x() # same next_x each time
<do something with x>
Terry J. Reedy
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