Error running in Visual Studio Code: AttributeError: Can't get attribute 'process_background_job' on <module '__main__' (built-in)>
Opened this issue · 2 comments
miohtama commented
I have the simple notebook with a single cell:
import parallelbar
def process_background_job(a, b):
return a + b
combinations = [
(1, 1),
(2, 3),
(3, 4),
]
results = parallelbar.progress_starmap(
process_background_job,
combinations,
n_cpu=4,
)
print(results)
Running with Visual Studio Code gives
Process SpawnPoolWorker-18:
Traceback (most recent call last):
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 314, in _bootstrap
self.run()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/pool.py", line 114, in worker
task = get()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/queues.py", line 367, in get
return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'process_background_job' on <module '__main__' (built-in)>
Process SpawnPoolWorker-19:
Traceback (most recent call last):
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 314, in _bootstrap
self.run()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/pool.py", line 114, in worker
task = get()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/queues.py", line 367, in get
return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'process_background_job' on <module '__main__' (built-in)>
Process SpawnPoolWorker-20:
Traceback (most recent call last):
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 314, in _bootstrap
self.run()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/pool.py", line 114, in worker
task = get()
File "/opt/homebrew/Cellar/python@3.10/3.10.13/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/queues.py", line 367, in get
return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'process_background_job' on <module '__main__' (built-in)>
Apparently parallerbar does not work with Jupyter notebooks?
- macOS
- Python 3.10
- Visual Studio Code 1.84.2
Jupyter packages:
comm 0.2.0 Jupyter Python Comm implementa...
ipykernel 6.27.0 IPython Kernel for Jupyter
ipywidgets 8.1.1 Jupyter interactive widgets
jupyter 1.0.0 Jupyter metapackage. Install a...
jupyter-client 8.6.0 Jupyter protocol implementatio...
jupyter-console 6.6.3 Jupyter terminal console
jupyter-core 5.5.0 Jupyter core package. A base p...
jupyter-events 0.6.3 Jupyter Event System library
jupyter-lsp 2.2.0 Multi-Language Server WebSocke...
jupyter-server 2.10.0 The backend—i.e. core services...
jupyter-server-terminals 0.4.4 A Jupyter Server Extension Pro...
jupyterlab 4.0.9 JupyterLab computational envir...
jupyterlab-pygments 0.3.0 Pygments theme using JupyterLa...
jupyterlab-server 2.24.0 A set of server components for...
jupyterlab-widgets 3.0.9 Jupyter interactive widgets fo...
nbconvert 7.11.0 Converting Jupyter Notebooks
nbformat 5.9.2 The Jupyter Notebook format
notebook 7.0.6 Jupyter Notebook - A web-based...
qtconsole 5.5.1 Jupyter Qt console
widgetsnbextension 4.0.9 Jupyter interactive widgets fo...
miohtama commented
Command line ipython gives the same error.
dubovikmaster commented
Hi.
You should run your code after if __name__==‘__main__’ clause.