ImportError: cannot import name '_update_worker_pids' about san HOT 5 OPEN

The version conflict is just a rename issue I guess.
You can try to replace _update_worker_pids with _set_worker_pids.
I think it should work.

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Have you solved this problem

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TLDR: No

This is due to version mismatch of PyTorch. This model, I believe, is based on PyTorch 0.3.1. If you use this version, this issue does not occur. Now this gives rise to a new problem as PyTorch 0.3.1 is old school. You could modify the code so that it can run on PyTorch 1.4 or whatever version you have. So, I guess it up to how seriously do you need this specific model, otherwise, there are quite a few other SR GANs available.

You might want to see this, this and specifically this comment

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Has this problem been solved? How to solve it, can you teach me?

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@liucong12345678 see my above-mentioned comment

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