Method setitem_by_index

crates/stdlib/src/mmap.rs:1533–1550

(
            &self,
            i: isize,
            value: PyObjectRef,
            vm: &VirtualMachine,
        )

        }

        fn setitem_by_index(
            &self,
            i: isize,
            value: PyObjectRef,
            vm: &VirtualMachine,
        ) -> PyResult<()> {
            let i: usize = i
                .wrapped_at(self.__len__())
                .ok_or_else(|| vm.new_index_error("mmap index out of range"))?;

            let b = value_from_object(vm, &value)?;

            self.try_writable(vm, |mmap| {
                mmap[i] = b;
            })?;

            Ok(())
        }

        fn setitem_by_slice(
            &self,