Re: [Python-ideas] PEP: Dict addition and subtraction

This is mainly for Steve, as the author of PEP 584. I'm grateful to Steve for preparing the current draft. Thank you. It's strong on implementation, but I find it weak on motivation. I hope that when time is available you (and the other contributors) could transfer some motivating material into the PEP, from python-ideas. According to PEP 001, the PEP "should clearly explain why the existing language specification is inadequate to address the problem that the PEP solves". So it is important. -- Jonathan