[Python-Dev] PEP 380 (yield from a subgenerator) comments (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Fri Mar 27 06:00:18 CET 2009

Guido van Rossum wrote:

(Well here is Greg's requested use case for .send(). :-)

There was a complaint that my return-value-with-send example was too much of a coroutine scenario, so I was hoping to find something un-coroutine-like. But if coroutines are the main uses for send in the first place, then it seems my example is fine as it is.

BTW, I've thought of an answer as to why one would want to write a parser using send(). In the non-send() version I had to make the scanner a global variable in order to avoid passing it around among all the parsing functions. The send() technique avoids having to do either of those things.

-- Greg

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