What version of python do you have?

[Michi-123]

What version of python do you have?

In version 3.8 , I got error.

Traceback (most recent call last):
  File "main.py", line 46, in <module>
    main()
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/site-packages/click/core.py", line 1128, in __call__
    return self.main(*args, **kwargs)
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/site-packages/click/core.py", line 1053, in main
    rv = self.invoke(ctx)
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/site-packages/click/core.py", line 1395, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/site-packages/click/core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "main.py", line 27, in main
    pool = MyPool(2)
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/multiprocessing/pool.py", line 212, in __init__
    self._repopulate_pool()
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/multiprocessing/pool.py", line 303, in _repopulate_pool
    return self._repopulate_pool_static(self._ctx, self.Process,
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/multiprocessing/pool.py", line 319, in _repopulate_pool_static
    w = Process(ctx, target=worker,
  File "/home/user/anaconda3/envs/PyTorch/lib/python3.8/multiprocessing/process.py", line 82, in __init__
    assert group is None, 'group argument must be None