Function intern

crates/vm/src/stdlib/sys.rs:1316–1318

(s: PyRefExact<PyStr>, vm: &VirtualMachine)

    #[pyfunction]
    fn intern(s: PyRefExact<PyStr>, vm: &VirtualMachine) -> PyRef<PyStr> {
        vm.ctx.intern_str(s).to_owned()
    }

    #[pyattr]
    fn int_info(vm: &VirtualMachine) -> PyTupleRef {