Correct logic for Node's parents/children association with inputs/outputs in aidge_core/show_graphview.py.

Context

This MR corrects an identified problem within the algorithm allowing to link a Node's parents (or children) nodes to its respective inputs (or outputs) in file aidge_core/show_graphview.py.

In short, only the dimensions of tensors were verified to do the matching, which caused a problem when, for example, multiple Node's inputs (or outputs) had the same dimensions.

Also, it corrects a few errors with the automatic creation of the generated files' paths.

Modified files

• python_binding/graph/pybind_Node.cpp , added the python binding for the method "get_ordered_children()";
• aidge_core/show_graphview.py, corrected logic used to link parents/children to inputs/outputs of a Node and management of paths.

Detailed major modifications

Inside the _create_dict method, employ the aidge_core.Node.outputs() method to retrieve the children of the Node's parents and the associated input index connected to each child. Similarly, use aidge_core.Node.inputs() to retrieve the Node's list of children and outputs.

aidge_core/show_graphview.py

@@ -195,17 +195,21 @@ def gview_to_json(gview : aidge_core.GraphView, json_path : Path, write_trainabl
     :type params_file_format: str, optional
     """
 
-    if json_path.is_dir():
-        json_path = (json_path.parent).joinpath('model.json')
+    if not json_path.suffix:
+        if not json_path.is_dir():
+            json_path.mkdir(parents=True, exist_ok=True)
+        json_path = json_path.joinpath('model.json')
 
-    elif not json_path.is_dir():
-        if json_path.suffix == '.json':
-            pass
-        else:
-            raise Exception('If ``json_path`` contains a filename it must be of JSON format.')
+    else:
+        if json_path.suffix != '.json':
+            raise Exception('If ``json_path`` contains a filename, it must be of JSON format.')
+        if not json_path.parent.is_dir():
+            json_path.parent.mkdir(parents=True, exist_ok=True)
 
     if write_trainable_params_ext:
         path_trainable_params = (json_path.parent).joinpath(json_path.stem +  '_trainable_params/')
+        path_trainable_params.mkdir(parents=True, exist_ok=True)
+        
     else:
         path_trainable_params = Path()