Method len

crates/vm/src/builtins/weakproxy.rs:87–89

(&self, vm: &VirtualMachine)

    }

    fn len(&self, vm: &VirtualMachine) -> PyResult<usize> {
        self.try_upgrade(vm)?.length(vm)
    }

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