[issue27275] KeyError thrown by optimised collections.OrderedDict.popitem()

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

> I think Serhiy's patch here (before revert) may be a 
> good idea (to re-apply).

That seems sensible to me as well.  It keeps the C version in harmony with the pure python version and it follows how regular dict's are implemented.

Serhiy, do you remember why your patch was reverted?

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