get_registered_tasks and register_task must be imported under if __name__ == "__main__" #81
Description
If from judo.tasks import get_registered_tasks, register_task is placed anywhere outside of if __name__ == "__main__":, I get the following output, and the GUI fails to launch. If it is placed under if __name__ == "__main__":, everything works.
started dora coordinator
started dora daemon
dataflow start triggered: 0198420f-4b5b-7620-a788-7bea6956c36a
attaching to dataflow (use `--detach` to run in background)
Error executing job with overrides: []
Error executing job with overrides: []
Error executing job with overrides: []
Error locating target 'judo.app.simulation.SimulationNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.
Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.
Error locating target 'judo.app.controller.ControllerNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.
Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.
Error locating target 'judo.app.visualization.VisualizationNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.
Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.With HYDRA_FULL_ERROR=1:
started dora coordinator
started dora daemon
dataflow start triggered: 01984211-4c33-73e2-94d4-d67c636d385c
attaching to dataflow (use `--detach` to run in background)
Error executing job with overrides: []
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 644, in _locate
obj = getattr(obj, part)
AttributeError: module 'judo.app' has no attribute 'controller'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 650, in _locate
obj = import_module(mod)
File "/usr/lib/python3.13/importlib/__init__.py", line 88, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/controller.py", line 13, in <module>
from judo.app.utils import register_optimizers_from_cfg, register_tasks_from_cfg
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/utils.py", line 8, in <module>
from judo.tasks import register_task
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 122, in <module>
_load_ephemeral_registry()
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 83, in _load_ephemeral_registry
spec.loader.exec_module(mod)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/packages/sim3d/src/sim3d/umv_task.py", line 143, in <module>
from judo.tasks import get_registered_tasks, register_task
ImportError: cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 134, in _resolve_target
target = _locate(target)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 658, in _locate
raise ImportError(
f"Error loading '{path}':\n{repr(exc_import)}"
) from exc_import
ImportError: Error loading 'judo.app.controller.ControllerNode':
ImportError("cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 17, in <module>
main()
~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/main.py", line 94, in decorated_main
_run_hydra(
~~~~~~~~~~^
args=args,
^^^^^^^^^^
...<3 lines>...
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 394, in _run_hydra
_run_app(
~~~~~~~~^
run=args.run,
^^^^^^^^^^^^^
...<5 lines>...
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 457, in _run_app
run_and_report(
~~~~~~~~~~~~~~^
lambda: hydra.run(
^^^^^^^^^^^^^^^^^^
...<3 lines>...
)
^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 223, in run_and_report
raise ex
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 220, in run_and_report
return func()
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 458, in <lambda>
lambda: hydra.run(
~~~~~~~~~^
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
task_function=task_function,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/hydra.py", line 132, in run
_ = ret.return_value
^^^^^^^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 260, in return_value
raise self._return_value
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 186, in run_job
ret.return_value = task_function(task_cfg)
~~~~~~~~~~~~~^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 12, in main
node = instantiate(node_cfg, _convert_="all")
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 226, in instantiate
return instantiate_node(
config, *args, recursive=_recursive_, convert=_convert_, partial=_partial_
)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 333, in instantiate_node
_target_ = _resolve_target(node.get(_Keys.TARGET), full_key)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 139, in _resolve_target
raise InstantiationException(msg) from e
hydra.errors.InstantiationException: Error locating target 'judo.app.controller.ControllerNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.
Error executing job with overrides: []
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 644, in _locate
obj = getattr(obj, part)
AttributeError: module 'judo.app' has no attribute 'visualization'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 650, in _locate
obj = import_module(mod)
File "/usr/lib/python3.13/importlib/__init__.py", line 88, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/visualization.py", line 18, in <module>
from judo.app.utils import register_optimizers_from_cfg, register_tasks_from_cfg
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/utils.py", line 8, in <module>
from judo.tasks import register_task
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 122, in <module>
_load_ephemeral_registry()
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 83, in _load_ephemeral_registry
spec.loader.exec_module(mod)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/packages/sim3d/src/sim3d/umv_task.py", line 143, in <module>
from judo.tasks import get_registered_tasks, register_task
ImportError: cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 134, in _resolve_target
target = _locate(target)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 658, in _locate
raise ImportError(
f"Error loading '{path}':\n{repr(exc_import)}"
) from exc_import
ImportError: Error loading 'judo.app.visualization.VisualizationNode':
ImportError("cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 17, in <module>
main()
~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/main.py", line 94, in decorated_main
_run_hydra(
~~~~~~~~~~^
args=args,
^^^^^^^^^^
...<3 lines>...
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 394, in _run_hydra
_run_app(
~~~~~~~~^
run=args.run,
^^^^^^^^^^^^^
...<5 lines>...
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 457, in _run_app
run_and_report(
~~~~~~~~~~~~~~^
lambda: hydra.run(
^^^^^^^^^^^^^^^^^^
...<3 lines>...
)
^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 223, in run_and_report
raise ex
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 220, in run_and_report
return func()
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 458, in <lambda>
lambda: hydra.run(
~~~~~~~~~^
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
task_function=task_function,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/hydra.py", line 132, in run
_ = ret.return_value
^^^^^^^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 260, in return_value
raise self._return_value
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 186, in run_job
ret.return_value = task_function(task_cfg)
~~~~~~~~~~~~~^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 12, in main
node = instantiate(node_cfg, _convert_="all")
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 226, in instantiate
return instantiate_node(
config, *args, recursive=_recursive_, convert=_convert_, partial=_partial_
)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 333, in instantiate_node
_target_ = _resolve_target(node.get(_Keys.TARGET), full_key)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 139, in _resolve_target
raise InstantiationException(msg) from e
hydra.errors.InstantiationException: Error locating target 'judo.app.visualization.VisualizationNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.
Error executing job with overrides: []
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 644, in _locate
obj = getattr(obj, part)
AttributeError: module 'judo.app' has no attribute 'simulation'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 650, in _locate
obj = import_module(mod)
File "/usr/lib/python3.13/importlib/__init__.py", line 88, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/simulation.py", line 13, in <module>
from judo.app.utils import register_tasks_from_cfg
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/app/utils.py", line 8, in <module>
from judo.tasks import register_task
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 122, in <module>
_load_ephemeral_registry()
~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py", line 83, in _load_ephemeral_registry
spec.loader.exec_module(mod)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/packages/sim3d/src/sim3d/umv_task.py", line 143, in <module>
from judo.tasks import get_registered_tasks, register_task
ImportError: cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 134, in _resolve_target
target = _locate(target)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 658, in _locate
raise ImportError(
f"Error loading '{path}':\n{repr(exc_import)}"
) from exc_import
ImportError: Error loading 'judo.app.simulation.SimulationNode':
ImportError("cannot import name 'get_registered_tasks' from partially initialized module 'judo.tasks' (most likely due to a circular import) (/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/judo/tasks/__init__.py)")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 17, in <module>
main()
~~~~^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/main.py", line 94, in decorated_main
_run_hydra(
~~~~~~~~~~^
args=args,
^^^^^^^^^^
...<3 lines>...
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 394, in _run_hydra
_run_app(
~~~~~~~~^
run=args.run,
^^^^^^^^^^^^^
...<5 lines>...
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 457, in _run_app
run_and_report(
~~~~~~~~~~~~~~^
lambda: hydra.run(
^^^^^^^^^^^^^^^^^^
...<3 lines>...
)
^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 223, in run_and_report
raise ex
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 220, in run_and_report
return func()
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/utils.py", line 458, in <lambda>
lambda: hydra.run(
~~~~~~~~~^
config_name=config_name,
^^^^^^^^^^^^^^^^^^^^^^^^
task_function=task_function,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
overrides=overrides,
^^^^^^^^^^^^^^^^^^^^
)
^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/hydra.py", line 132, in run
_ = ret.return_value
^^^^^^^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 260, in return_value
raise self._return_value
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/core/utils.py", line 186, in run_job
ret.return_value = task_function(task_cfg)
~~~~~~~~~~~~~^^^^^^^^^^
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/dora_utils/launch/_launch_node.py", line 12, in main
node = instantiate(node_cfg, _convert_="all")
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 226, in instantiate
return instantiate_node(
config, *args, recursive=_recursive_, convert=_convert_, partial=_partial_
)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 333, in instantiate_node
_target_ = _resolve_target(node.get(_Keys.TARGET), full_key)
File "/home/bbokser/git_workspace/internal/umv-morphology/.venv/lib/python3.13/site-packages/hydra/_internal/instantiate/_instantiate2.py", line 139, in _resolve_target
raise InstantiationException(msg) from e
hydra.errors.InstantiationException: Error locating target 'judo.app.simulation.SimulationNode', set env var HYDRA_FULL_ERROR=1 to see chained exception.