RuntimeError: Module 'ResNet' has no attribute 'stages_and_names'

[lix19937]

Instructions To Reproduce the 🐛 Bug:

1. Full runnable code or full changes you made:

  File "/opt/conda/envs/alpha_env/lib/python3.8/site-packages/torch/jit/_recursive.py", line 368, in create_methods_and_properties_from_stubs
    concrete_type._create_methods_and_properties(property_defs, property_rcbs, method_defs, method_rcbs, method_defaults)

RuntimeError: 
Module 'ResNet' has no attribute 'stages_and_names' (This attribute exists on the Python module, but we failed to convert Python type: 'list' to a TorchScript type. Could not infer type of list element: Cannot infer concrete type of torch.nn.Module. Its type was inferred; try adding a type annotation for the attribute.):

  File "/root/code/modeling/backbone/res2net.py", line 632

        if "stem" in self._out_features:
            outputs["stem"] = x
        for stage, name in self.stages_and_names:
                           ~~~~~~~~~~~~~~~~~~~~~ <--- HERE

            x = stage(x)
            if name in self._out_features:

ref #2734 ，
https://detectron2.readthedocs.io/en/latest/tutorials/deployment.html#deployment-with-tracing-or-scripting not work !!!

Environment:

torch 1.10.2+cu113
detectron2 0.6

[fumin]

Hitting against this bug, too:

RuntimeError: 
Module 'ResNet' has no attribute 'stages' (This attribute exists on the Python module, but we failed to convert Python type: 'list' to a TorchScript type. Could not infer type of list element: Cannot infer concrete type of torch.nn.Module. Its type was inferred; try adding a type annotation for the attribute.):
  File "/usr/local/detectron2/detectron2/modeling/backbone/resnet.py", line 448
        if "stem" in self._out_features:
            outputs["stem"] = x
        for name, stage in zip(self.stage_names, self.stages):
                                                 ~~~~~~~~~~~ <--- HERE
            x = stage(x)
            if name in self._out_features: