[issue26107] PEP 511: code.co_lnotab: use signed line number delta to support moving instructions in an optimizer

[Brett Cannon]

Brett Cannon added the comment:

I just wanted to comment on "don't change importlib MAGIC: we only change it between Python minor versions": that's actually not true. Feel free to up the number whenever you make a change that affects eval.c or bytecode. Otherwise .pyc files won't be regenerated. And that number is cheap anyway and isn't about to run out, so don't worry about updating it multiple times before the code sees a public release.

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