Okay I’ll let Berker update his patch, but I’m happy to try my hand at updating the documentation if needed.

I reviewed the current patch. I can’t say whether the ast.c change is good or not. But IMO the test would be better off in somewhere like /Lib/test/test_unpack.py. It is only a superficial relationship with tuples because the syntax looks the same. Also may be worth testing that [] = [] etc work as well.