[Python-Dev] PEP 550 v4 (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Thu Sep 7 07:39:39 EDT 2017

There are a couple of things in the PEP I'm confused about:

  1. Under "Generators" it says:

    once set in the generator, the context variable is guaranteed not to change between iterations;

This suggests that you're not allowed to set() a given context variable more than once in a given generator, but some of the examples seem to contradict that. So I'm not sure what this is trying to say.

  1. I don't understand why the logical_contexts have to be immutable. If every task or generator that wants its own task-local storage has its own logical_context instance, why can't it be updated in-place?

-- Greg

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