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Author ncoghlan
Recipients Mark.Shannon, arigo, belopolsky, benjamin.peterson, ncoghlan, njs, vstinner, xdegaye, xgdomingo, yselivanov
Date 2017-09-19.06:06:28
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For write-backs: no, since the interpreter will still write those values back into the destination cell

For locals display: no, since nothing changes for the handling of fast locals

For closure display: yes as, by default, debuggers will now print the closure cell, not the value the cell references - they'd need to be updated to display obj.cell_contents for items listed in co_freevars and co_cellvars.

That's why PEP 588 needs to be a PEP - there's a language design question around the trade-off between requiring all future Python implementations to implement a new write-through proxy type solely for this use case, or instead requiring trace functions to cope with co_freevars and co_cellvars being passed through as cell objects, rather than as direct references to their values.
Date User Action Args
2017-09-19 06:06:29ncoghlansetrecipients: + ncoghlan, arigo, belopolsky, vstinner, benjamin.peterson, njs, xdegaye, Mark.Shannon, yselivanov, xgdomingo
2017-09-19 06:06:28ncoghlansetmessageid: <>
2017-09-19 06:06:28ncoghlanlinkissue30744 messages
2017-09-19 06:06:28ncoghlancreate