Function count_placeholders

crates/vm/src/stdlib/_functools.rs:122–124

(args: &[PyObjectRef])

    }

    fn count_placeholders(args: &[PyObjectRef]) -> usize {
        args.iter().filter(|a| is_placeholder(a)).count()
    }

    #[pyattr]
    #[pyclass(name = "partial", module = "functools")]