[issue6133] LOAD_CONST followed by LOAD_ATTR can be optimized to just be a LOAD_COST

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

Martin, I agree that we would have to think carefully about all
attributes of all constants loaded by LOAD_CONST, and about
special-casing marshal, but given that "'str' object attribute 'join' is
read-only", how is ''.join not a constant?  Do you have another example
in mind?

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nosy: +tjreedy

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