[pypy-dev] RFC: draft idea for making for loops automatically close iterators

[William ML Leslie]

Have you considered Custodians, a-la racket?  I suspect that adding
resources to and finalising custodians requires less defensiveness
than marking all iterables as resources, but I've yet to see someone
implement them in python.

https://docs.racket-lang.org/reference/custodians.html

-- 
William Leslie

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