Joshua Landau added the comment:
We wouldn't actually need to raise it "from" somewhere else; the line numbering
and frame are already correct. The only difficulty is that the traceback
currently says
# func(a=1, **{'a': 1})
TypeError: func() got multiple values for keyword argument 'arg'
↑↑↑↑
To do this from the UNPACK opcode would require knowing where the function is
in order to print its name. (We also need to know whether to do the check at
all, so we'd be hijacking some bits the UNPACK opcode anyway.)
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue2292>
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