add error message when trainer is not found in inference

MIC-DKFZ · Apr 26, 2024 · 5db9604 · 5db9604
1 parent 60b23b4
commit 5db9604
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/nnunetv2/inference/predict_from_raw_data.py b/nnunetv2/inference/predict_from_raw_data.py
@@ -96,7 +96,9 @@ def initialize_from_trained_model_folder(self, model_training_output_dir: str,
         num_input_channels = determine_num_input_channels(plans_manager, configuration_manager, dataset_json)
         trainer_class = recursive_find_python_class(join(nnunetv2.__path__[0], "training", "nnUNetTrainer"),
                                                     trainer_name, 'nnunetv2.training.nnUNetTrainer')
-
+        if trainer_class is None:
+            raise RuntimeError(f'Unable to locate trainer class {trainer_name} in nnunetv2.training.nnUNetTrainer. '
+                               f'Please place it there (in any .py file)!')
         network = trainer_class.build_network_architecture(
             configuration_manager.network_arch_class_name,
             configuration_manager.network_arch_init_kwargs,

diff --git a/nnunetv2/utilities/find_class_by_name.py b/nnunetv2/utilities/find_class_by_name.py
@@ -21,4 +21,4 @@ def recursive_find_python_class(folder: str, class_name: str, current_module: st
                 tr = recursive_find_python_class(join(folder, modname), class_name, current_module=next_current_module)
             if tr is not None:
                 break
-    return tr
+    return tr