pytorch - 💡(How to fix) Fix DISABLED test_constant (__main__.TestPythonPytree) [2 comments, 1 participants]

Official PRs (…)
ON THIS PAGE

Recommended Tools

×6

Utilities matched from this issue’s tags and category — try them while you read without losing context.

GitHub issue graph ai analysis

Paste a GitHub issue URL. We fetch that issue, discover linked issues from bodies/comments/timeline, collect linked pull requests, and produce a structured English report.

The report is written in English Markdown for sharing and archival.

Helpful · Quick feedback

Loading…
GitHub stats
pytorch/pytorch#182645Fetched 2026-05-07 03:30:57
View on GitHub
Comments
2
Participants
1
Timeline
30
Reactions
0
Participants
Timeline (top)
mentioned ×12subscribed ×12labeled ×4commented ×2

Error Message

Traceback (most recent call last): File "/__w/pytorch/pytorch/test/test_pytree.py", line 1347, in test_constant class Config: File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2547, in call result = self._torchdynamo_orig_backend( frame, cache_entry, self.hooks, frame_state, skip=1 ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2255, in call result = self._inner_convert( frame, cache_entry, hooks, frame_state, skip=skip + 1 ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 775, in call result = _compile( frame.f_code, ...<18 lines>... convert_frame_box=self._box, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2104, in _compile raise InternalTorchDynamoError( f"{type(e).qualname}: {str(e)}" ).with_traceback(e.traceback) from None File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2039, in _compile guarded_code, tracer_output = compile_inner(code, one_graph, hooks) ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function return function(*args, **kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1632, in compile_inner result = _compile_inner(code, one_graph, hooks) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1692, in _compile_inner dynamo_output = compile_frame( code, ...<11 lines>... package=package, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1534, in compile_frame bytecode, tracer_output = transform_code_object(code, transform) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object tracer_output = transformations(instructions, code_options) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1505, in transform tracer_output = trace_frame( code, ...<14 lines>... package=package, ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 367, in _fn return fn(*args, **kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 952, in trace_frame run_tracer() ~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 933, in run_tracer tracer.run() ~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function return super().call_function(tx, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs) # type: ignore[attr-defined] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return return InliningInstructionTranslator.inline_call(self, fn, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5529, in inline_call return tracer.inline_call() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5758, in inline_call self.run() ~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function return super().call_function(tx, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs) # type: ignore[attr-defined] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return return InliningInstructionTranslator.inline_call(self, fn, args, kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5529, in inline_call return tracer.inline_call() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/dynamo/symbolic_convert.py", line 5758, in inline_call self.run() ~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run while self.step(): ~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step self.dispatch_table[inst.opcode](self, inst) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper return inner_fn(self, inst) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL self._call(inst) ~~~~~~~~~~^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call self.call_function(fn, args, kwargs) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function self.push(fn.call_function(self, args, kwargs)) # type: ignore[arg-type] ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 837, in call_function constant_args = check_constant_args(args, kwargs) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in check_constant_args return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values())) ^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in <genexpr> return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values())) ~~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward return getattr(self.realize(), name)(*args, **kwargs) ~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize self._cache.realize() ~~~~~~~~~~~~~~~~~~~^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize self.vt = builder.VariableBuilder( ~~~~~~~~~~~~~~~~~~~~~~~~ tx, self.source, allow_lazy_constant=False ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ )(self.value) ~^^^^^^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 493, in call return self._call_impl(value) ~~~~~~~~~~~~~~~^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 530, in _call_impl vt = self._wrap(value) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 887, in _wrap result = dict( build_key_value(i, k, v) for i, k, v in enumerate_items_with_dict_position(value) ) File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 889, in <genexpr> for i, k, v in enumerate_items_with_dict_position(value) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^ File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2986, in <genexpr> return ((i, k, v) for i, (k, v) in enumerate(items)) ~~~~~~~~~^^^^^^^ torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code: File "/__w/pytorch/pytorch/test/test_pytree.py", line 1346, in torch_dynamo_resume_in_test_constant_at_1347 @dataclass(unsafe_hash=True) File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap return _process_class(cls, init, repr, eq, order, unsafe_hash, File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"

To execute this test, run the following from the base repo dir: PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_constant

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0

Root Cause

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Fix Action

Fix / Workaround

Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1347, in test_constant
    class Config:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2547, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2255, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 775, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2104, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2039, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1632, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1692, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1534, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1505, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 367, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 952, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 933, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 837, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 493, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 530, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 887, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 889, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2986, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

Code Example

Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1347, in test_constant
    class Config:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2547, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2255, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 775, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2104, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2039, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1632, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1692, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1534, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1505, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 367, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 952, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 933, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 837, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 493, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 530, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 887, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 889, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2986, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code:
   File "/__w/pytorch/pytorch/test/test_pytree.py", line 1346, in torch_dynamo_resume_in_test_constant_at_1347
    @dataclass(unsafe_hash=True)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class
    func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"


To execute this test, run the following from the base repo dir:
    PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_constant

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0
RAW_BUFFERClick to expand / collapse

Platforms: dynamo

This test was disabled because it is failing in CI. See recent examples and the most recent trunk workflow logs.

Over the past 6 hours, it has been determined flaky in 3 workflow(s) with 3 failures and 3 successes.

Debugging instructions (after clicking on the recent samples link): DO NOT ASSUME THINGS ARE OKAY IF THE CI IS GREEN. We now shield flaky tests from developers so CI will thus be green but it will be harder to parse the logs. To find relevant log snippets:

  1. Click on the workflow logs linked above
  2. Click on the Test step of the job so that it is expanded. Otherwise, the grepping will not work.
  3. Grep for test_constant
  4. There should be several instances run (as flaky tests are rerun in CI) from which you can study the logs.
<details><summary>Sample error message</summary>
Traceback (most recent call last):
  File "/__w/pytorch/pytorch/test/test_pytree.py", line 1347, in test_constant
    class Config:
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2547, in __call__
    result = self._torchdynamo_orig_backend(
        frame, cache_entry, self.hooks, frame_state, skip=1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2255, in __call__
    result = self._inner_convert(
        frame, cache_entry, hooks, frame_state, skip=skip + 1
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 775, in __call__
    result = _compile(
        frame.f_code,
    ...<18 lines>...
        convert_frame_box=self._box,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2104, in _compile
    raise InternalTorchDynamoError(
        f"{type(e).__qualname__}: {str(e)}"
    ).with_traceback(e.__traceback__) from None
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 2039, in _compile
    guarded_code, tracer_output = compile_inner(code, one_graph, hooks)
                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_utils_internal.py", line 96, in wrapper_function
    return function(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1632, in compile_inner
    result = _compile_inner(code, one_graph, hooks)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1692, in _compile_inner
    dynamo_output = compile_frame(
        code,
    ...<11 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1534, in compile_frame
    bytecode, tracer_output = transform_code_object(code, transform)
                              ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/bytecode_transformation.py", line 1766, in transform_code_object
    tracer_output = transformations(instructions, code_options)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 1505, in transform
    tracer_output = trace_frame(
        code,
    ...<14 lines>...
        package=package,
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 367, in _fn
    return fn(*args, **kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 952, in trace_frame
    run_tracer()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/convert_frame.py", line 933, in run_tracer
    tracer.run()
    ~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 826, in call_function
    return super().call_function(tx, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/functions.py", line 495, in call_function
    return tx.inline_user_function_return(self, [*self.self_args(), *args], kwargs)  # type: ignore[attr-defined]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1447, in inline_user_function_return
    return InliningInstructionTranslator.inline_call(self, fn, args, kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5529, in inline_call
    return tracer.inline_call_()
           ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 5758, in inline_call_
    self.run()
    ~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1866, in run
    while self.step():
          ~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1519, in step
    self.dispatch_table[inst.opcode](self, inst)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1033, in wrapper
    return inner_fn(self, inst)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4389, in CALL
    self._call(inst)
    ~~~~~~~~~~^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 4380, in _call
    self.call_function(fn, args, kwargs)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/symbolic_convert.py", line 1420, in call_function
    self.push(fn.call_function(self, args, kwargs))  # type: ignore[arg-type]
              ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/user_defined.py", line 837, in call_function
    constant_args = check_constant_args(args, kwargs)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in check_constant_args
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
           ^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2870, in <genexpr>
    return all(x.is_python_constant() for x in itertools.chain(args, kwargs.values()))
               ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 511, in realize_and_forward
    return getattr(self.realize(), name)(*args, **kwargs)
                   ~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 115, in realize
    self._cache.realize()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/lazy.py", line 49, in realize
    self.vt = builder.VariableBuilder(
              ~~~~~~~~~~~~~~~~~~~~~~~~
        tx, self.source, allow_lazy_constant=False
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    )(self.value)
    ~^^^^^^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 493, in __call__
    return self._call_impl(value)
           ~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 530, in _call_impl
    vt = self._wrap(value)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 887, in _wrap
    result = dict(
        build_key_value(i, k, v)
        for i, k, v in enumerate_items_with_dict_position(value)
    )
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/variables/builder.py", line 889, in <genexpr>
    for i, k, v in enumerate_items_with_dict_position(value)
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
  File "/opt/conda/envs/py_3.14/lib/python3.14t/site-packages/torch/_dynamo/utils.py", line 2986, in <genexpr>
    return ((i, k, v) for i, (k, v) in enumerate(items))
                                       ~~~~~~~~~^^^^^^^
torch._dynamo.exc.InternalTorchDynamoError: RuntimeError: dictionary changed size during iteration

from user code:
   File "/__w/pytorch/pytorch/test/test_pytree.py", line 1346, in torch_dynamo_resume_in_test_constant_at_1347
    @dataclass(unsafe_hash=True)
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1432, in wrap
    return _process_class(cls, init, repr, eq, order, unsafe_hash,
  File "/opt/conda/envs/py_3.14/lib/python3.14t/dataclasses.py", line 1130, in _process_class
    func_builder = _FuncBuilder(globals)

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"


To execute this test, run the following from the base repo dir:
    PYTORCH_TEST_WITH_DYNAMO=1 python test/test_pytree.py TestPythonPytree.test_constant

This message can be suppressed by setting PYTORCH_PRINT_REPRO_ON_FAILURE=0
</details>

Test file path: test_pytree.py

For all disabled tests (by GitHub issue), see https://hud.pytorch.org/disabled.

cc @zou3519 @XuehaiPan @chauhang @penguinwu

Vote matrix · Quick signals

Works
Did the solution work? Tap to confirm.
Easy Fix
Was it a quick fix?
Time Saver
Did it save you time?
Blocking
Was it severely blocking?
Common Issue
Are others likely hitting this too?
Flaky / Intermittent
Is it intermittent?
Verified / Reproducible
Can you reproduce it reliably?
Loading…

Still need to ship something?

×6

Another batch ranked right after the header list — different links, same matching logic.

Back to top recommendations

TRENDING