Author ncoghlan
Recipients Arfrever, eltoder, eric.snow, ncoghlan, njs, trent
Date 2017-12-10.00:27:44
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I updated some of the issue metadata and added a question mark to the issue title to help make it clearer that this would require a PEP level conceptual enhancement to the language, rather than being about documenting an existing concept.

PEP 557's data classes take a step in that direction with their "frozen=True" parameter:
Date User Action Args
2017-12-10 00:27:44ncoghlansetrecipients: + ncoghlan, trent, Arfrever, njs, eltoder, eric.snow
2017-12-10 00:27:44ncoghlansetmessageid: <>
2017-12-10 00:27:44ncoghlanlinkissue24991 messages
2017-12-10 00:27:44ncoghlancreate