Re: [Python-Dev] Re: Sets: elt in dict, lst.include

Only if PyList_SetItem refuses to handle 'frozen' lists. In my eyes, 'frozen' lists should still pass PyList_Check(), but also PyList_Frozen() (or whatever), and methods/operations that modify the listobject would have to check if the list is frozen, and raise an appropriate error if so. This might throw 'unexpected' errors.

did someone just subscribe me to the perl-porters list? -1 on "modal freeze" (it's madness) -0 on an "immutable dictionary" type in the core