Method __len__

crates/vm/src/builtins/memory.rs:699–708

(&self, vm: &VirtualMachine)

    }

    fn __len__(&self, vm: &VirtualMachine) -> PyResult<usize> {
        self.try_not_released(vm)?;
        if self.desc.ndim() == 0 {
            // 0-dimensional memoryview has no length
            Err(vm.new_type_error("0-dim memory has no length"))
        } else {
            // shape for dim[0]
            Ok(self.desc.dim_desc[0].0)
        }
    }

    #[pymethod]
    fn tobytes(&self, vm: &VirtualMachine) -> PyResult<PyBytesRef> {