[issue8404] Set operations don't work for dictionary views

[Alexandre Vassalotti]

Alexandre Vassalotti <alexandre at peadrop.com> added the comment:

It is a bug.

First, the dictviews_as_number is broken; the field for classic division was removed in 3.x, so everything is shifted by one. I included a patch to fix this.

Unfortunately, this isn't enough to fix the issue. There seems to be some overly restrictive type checking going on in the method wrappers. However, I don't have the time to investigate this further today. I should be able to check this next weekend.

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