This shorthand to use lists as dict keys works in Python 3.12: mydict = {(1, 2, 3): 'works!'} mylist = [1, 2, 3] print(mydict[*mylist]) In 3.10 it gives SyntaxError and in 3.11 it works (at least in the versions I tried). I searched What’s New In Python 3.11 but didn't see anything about it. Maybe it was a side effect of some other change. Why/where/when was it introduced? Looking for (information from) a GitHub issue / pull request or so. Continue reading...
