Asynchronous Random Search

English Version pytorch
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https://d2l.ai/chapter_hyperparameter-optimization/rs_async.html

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It seems that this code is wrong.
from syne_tune.backend.python_backend import PythonBackend
It causes an error:
ImportError: cannot import name 'PythonBackend' from 'syne_tune.backend.python_backend' (D:\Miniconda\envs\d2l\lib\site-packages\syne_tune\backend\python_backend\__init__.py)
It may results from the change of Syne Tune. Change this line into this one can fix it.
from syne_tune.backend.python_backend.python_backend import PythonBackend