Method __str__

crates/vm/src/builtins/str.rs:1485–1493

(zelf: &Py<Self>, vm: &VirtualMachine)

    #[pymethod]
    fn __str__(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<PyStrRef> {
        if zelf.class().is(vm.ctx.types.str_type) {
            // Already exact str, just return a reference
            Ok(zelf.to_owned())
        } else {
            // Subclass, create a new exact str
            Ok(PyStr::from(zelf.data.clone()).into_ref(&vm.ctx))
        }
    }
}

impl PyRef<PyStr> {