I'm glad to see that everything old is new again. All the stuff being discussed nowadays, even up through PEP 492, was largely what I was trying to show in 2002 .... the syntax just got nicer in the intervening 13 years :-).
On Wed, May 6, 2015 at 10:57 AM, Guido van Rossum <gu...@python.org> wrote: > For those interested in tracking the history of generators and coroutines > in Python, I just found out that PEP 342 > <https://www.python.org/dev/peps/pep-0342/> (which introduced > send/throw/close and made "generators as coroutines" a mainstream Python > concept) harks back to PEP 288 <https://www.python.org/dev/peps/pep-0288/>, > which was rejected. PEP 288 also proposed some changes to generators. The > interesting bit though is in the references: there are two links to old > articles by David Mertz that describe using generators in state machines > and other interesting and unconventional applications of generators. All > these well predated PEP 342, so yield was a statement and could not receive > a value from the function calling next() -- communication was through a > shared class instance. > > http://gnosis.cx/publish/programming/charming_python_b5.txt > http://gnosis.cx/publish/programming/charming_python_b7.txt > > Enjoy! > > -- > --Guido van Rossum (python.org/~guido) > -- Keeping medicines from the bloodstreams of the sick; food from the bellies of the hungry; books from the hands of the uneducated; technology from the underdeveloped; and putting advocates of freedom in prisons. Intellectual property is to the 21st century what the slave trade was to the 16th.
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