On 8 Oct 2006 12:33:02 -0700, [EMAIL PROTECTED] wrote: >So I've been reading up on all the new stuff in PEP 342, and trying to >understand its potential. So I'm starting with a few simple examples to >see if they work as expected, and find they dont. > >I'm basically trying to do the following: > >for x in range(10): > print x*2 > >but coroutine-style. > >My initial try was: > >>>> def printrange(): >... for x in range(10): >... x = yield x >... print x >... >>>> g = printrange() >>>> for x in g: >... g.send(x*2) >...
Try this instead: >>> x = None >>> while 1: ... if x is None: ... send = None ... else: ... send = x * 2 ... try: ... x = g.send(send) ... except StopIteration: ... break ... 0 2 4 6 8 10 12 14 16 18 > >Now, I was expecting that to be 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. > >What am I missing here? Your code was calling next and send, when it should have only been calling send. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
