Try #201:

godot-core/src/builtin/node_path.rs

@@ -5,6 +5,7 @@
  */
 
 use std::fmt;
+use std::str::FromStr;
 
 use crate::builtin::GodotString;
 use godot_ffi as sys;
@@ -60,6 +61,15 @@ impl From<&str> for NodePath {
     }
 }
 
+// TODO: Check if it's required to implement Err
+impl FromStr for NodePath {
+    type Err = ();
+
+    fn from_str(path: &str) -> Result<Self, ()> {
+        Ok(Self::from(&GodotString::from(path)))
+    }
+}
+
 impl fmt::Display for NodePath {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let string = GodotString::from(self);

itest/rust/src/node_test.rs

@@ -9,6 +9,8 @@ use godot::builtin::{NodePath, Variant};
 use godot::engine::{global, node, Node, Node3D, NodeExt, PackedScene, SceneTree};
 use godot::obj::Share;
 
+use std::str::FromStr;
+
 #[itest]
 fn node_get_node() {
     let mut child = Node3D::new_alloc();
@@ -54,6 +56,15 @@ fn node_get_node_fail() {
     child.free();
 }
 
+#[itest]
+fn node_path_from_str(ctx: &TestContext) {
+    let child = ctx.scene_tree.share();
+    assert_eq!(
+        child.get_path().to_string(),
+        NodePath::from_str("/root/TestRunner").unwrap().to_string()
+    );
+}
+
 #[itest(skip)]
 fn node_scene_tree() {
     let mut child = Node::new_alloc();