pytorch2.0 No module named 'torch._six'

This error usually occurs when there is a mismatch in the versions of PyTorch and other dependencies. To resolve this issue, you can try the following steps:

1. Upgrade PyTorch to the latest version using pip command:

`pip install torch --upgrade`

2. Upgrade other dependencies to their latest version as well:

`pip install -U setuptools`

`pip install -U wheel`

`pip install -U pip`

3. Uninstall PyTorch and reinstall it using pip:

`pip uninstall torch`

`pip install torch`

4. If the above steps do not work, try reinstalling PyTorch and its dependencies in a new virtual environment:

`conda create -n myenv python=3.6`

`conda activate myenv`

`pip install torch`

5. If the issue persists, try running the code on a different machine or platform.