def fmt_call_method(vm, argc: int, repr=repr) -> str:
    """
    formats function name (without enclosing object), and positional args.
    """
    pos_args = [vm.peek(i + 1) for i in range(argc)]

    fn_name = vm.peek(argc + 2).__name__
    return f""" {fn_name}({", ".join((repr(a) for a in pos_args))})"""