amk> It always seemed odd to me that the current line number is always
amk> kept up to date, even though 99.999% of the time, no one will care.
amk> Why not just keep a small table that holds the offset in the
amk> bytecode at which each line starts, and look it up when it's
amk> needed?
(I'm probably going to wind up seeming like a fool, responding late to this
thread without having read it end-to-end, but...)
Isn't that what the code object's co_lnotab is for? I thought the idea was
to dispense with SET_LINENO altogether and just compute line numbers using
co_lnotab on those rare occasions (debugging, tracebacks, etc) when you
needed them.
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