py39 does not like | E TypeError: unsupported operand type(s) for |: 'type' and 'EnumMeta'

[lanluo-nvidia]

Description

py39 does not like |
E TypeError: unsupported operand type(s) for |: 'type' and 'EnumMeta'

Type of change

Please delete options that are not relevant and/or add your own.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[github-actions]

There are some changes that do not conform to Python style guidelines:

--- /home/runner/work/TensorRT/TensorRT/py/torch_tensorrt/dynamo/runtime/_MutableTorchTensorRTModule.py	2025-06-20 15:03:25.318969+00:00
+++ /home/runner/work/TensorRT/TensorRT/py/torch_tensorrt/dynamo/runtime/_MutableTorchTensorRTModule.py	2025-06-20 15:03:54.082154+00:00
@@ -67,11 +67,11 @@
        use_python_runtime: bool = _defaults.USE_PYTHON_RUNTIME,
        immutable_weights: bool = False,
        strict: bool = True,
        allow_complex_guards_as_runtime_asserts: bool = False,
        weight_streaming_budget: Optional[int] = None,
-        enabled_precisions: Optional[Set[Union[torch.dtype,dtype]]] = None,
+        enabled_precisions: Optional[Set[Union[torch.dtype, dtype]]] = None,
        **kwargs: Any,
    ) -> None:
        """

        Arguments:

[github-actions]

There are some changes that do not conform to Python style guidelines:

--- /home/runner/work/TensorRT/TensorRT/py/torch_tensorrt/dynamo/runtime/_MutableTorchTensorRTModule.py	2025-06-20 15:03:37.845602+00:00
+++ /home/runner/work/TensorRT/TensorRT/py/torch_tensorrt/dynamo/runtime/_MutableTorchTensorRTModule.py	2025-06-20 15:04:02.229836+00:00
@@ -67,11 +67,11 @@
        use_python_runtime: bool = _defaults.USE_PYTHON_RUNTIME,
        immutable_weights: bool = False,
        strict: bool = True,
        allow_complex_guards_as_runtime_asserts: bool = False,
        weight_streaming_budget: Optional[int] = None,
-        enabled_precisions: Optional[Set[Union[torch.dtype,dtype]]] = None,
+        enabled_precisions: Optional[Set[Union[torch.dtype, dtype]]] = None,
        **kwargs: Any,
    ) -> None:
        """

        Arguments: