[Python-Dev] [SPAM?] Re: PEP 558: Defined semantics for locals() (original) (raw)

Terry Reedy tjreedy at udel.edu
Mon May 27 09:12:40 EDT 2019

On 5/27/2019 3:18 AM, Greg Ewing wrote:

Chris Angelico wrote:

Except that it does. After calling locals() a second time, the result of the first call will be updated to reflect changes. Yeow. That's really unintuitive. There had better be an extremely good reason for this behaviour.

I believe that the situation is or can be thought of as this: there is exactly 1 function locals dict. Initially, it is empty and inaccessible (unusable) from code. Each locals() call updates the dict to a current snapshot and returns it.

-- Terry Jan Reedy

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