[issue31513] Document structure of memo dictionary to enable more advanced __deepcopy__ uses

[R. David Murray]

R. David Murray added the comment:

Unless I'm mistaken (and someone will correct me and reopen the issue if I am :) it is intentionally undocumented.  A proposal for a documented protocol of some sort is certainly a possibility, but is something that should start with a discussion on the python-ideas mailing list.

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nosy: +r.david.murray
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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<https://bugs.python.org/issue31513>
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