I have to say I agree with Neil here. I was trying to think about what other reasons an attribute might be unsettable, and did not quickly come up with that list.
And after reading your list, I tried to imagine what I’d tell my beginning students ! But if the error message is indeed unique then yes: "can't set property 'f'" Would be far more clear message. -CHB -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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