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

Ethan Furman ethan at stoneleaf.us
Fri Aug 25 22:19:32 EDT 2017

All in all, I like it. Nice job.

On 08/25/2017 03:32 PM, Yury Selivanov wrote:

A context variable is an object representing a value in the execution context. A new context variable is created by calling the newcontextvar() function. A context variable object has two methods:

* lookup(): returns the value of the variable in the current execution context; * set(): sets the value of the variable in the current execution context.

Why "lookup" and not "get" ? Many APIs use "get" and it's functionality is well understood.

Conceptually, an execution context (EC) is a stack of logical contexts. There is one EC per Python thread.

A logical context (LC) is a mapping of context variables to their values in that particular LC.

Still don't like the name of "logical context", but we can bike-shed on that later.

-- Ethan

More information about the Python-Dev mailing list