On 2021-09-18 16:10, Serhiy Storchaka wrote: > 18.09.21 09:40, Marco Sulla пише: >> Ooook..... I have a question. Why is this code not present in >> dictobject.c? Where are the dict annotations implemented? > > In dictobject.c. > I just had a look at dictobject.c. It too has a cast to PyCFunction.