(pytorch) C:\WINDOWS\system32>import torch 'import' 不是内部或外部命令，也不是可运行的程序 或批处理文件。

这个错误提示是因为在命令行中输入 `import torch` 是无法执行的，因为 `import` 是Python语言的关键字，需要在Python解释器环境中使用。

你可以先在命令行中输入 `python` 进入Python解释器环境，然后再输入 `import torch` 就可以成功执行了。如果你还没有安装PyTorch，可以先通过pip安装，命令为 `pip install torch`。

相关问题

base) C:\WINDOWS\system32>conda activate pytorch 此时不应有 \ZA\envs\pytorch\Library\ssl\cacert.pem。

根据提供的引用内容，您可能需要重新安装Anaconda3并创建新的PyTorch环境。在创建新环境后，您可以验证是否存在 \ZA\envs\pytorch\Library\ssl\cacert.pem 文件。如果存在，您可以尝试手动删除该文件并重新验证安装。以下是可能有用的步骤：

1. 卸载旧版本的Anaconda3。
2. 下载最新版本的Anaconda3并按照提示进行安装。
3. 打开Anaconda Prompt并输入以下命令以创建新的PyTorch环境：

   conda create --name pytorch

4. 激活新环境：

   conda activate pytorch

5. 安装PyTorch：

   conda install pytorch torchvision torchaudio -c pytorch

6. 验证安装成功：

   python
   import torch
   print(torch.__version__)

7. 如果您仍然遇到问题，请尝试手动删除 \ZA\envs\pytorch\Library\ssl\cacert.pem 文件并重新验证安装。

python -c "import torch_geometric" Segmentation fault

A segmentation fault error occurs when a program tries to access a memory location that it is not allowed to access. In this case, it seems that the Python script is trying to import the torch_geometric library, but something is going wrong with the memory allocation.

There are a few things you can try to solve this issue:

1. Check that you have installed torch_geometric correctly. You can do this by running `pip show torch-geometric` in your terminal to see if it is installed and what version you have. If it is not installed, you can install it with `pip install torch-geometric`.

2. Check that you have the correct version of PyTorch installed. Torch_geometric requires PyTorch version 1.4.0 or later. You can check your PyTorch version by running `python -c "import torch; print(torch.__version__)"` in your terminal.

3. Try running the script in a different environment, such as a virtual environment or a Docker container. This can help to isolate any issues with dependencies or conflicting libraries.

4. If none of the above solutions work, try updating your operating system and/or your graphics card driver. Sometimes, outdated drivers can cause memory issues.

If none of the above solutions work, you may need to seek further help from the torch_geometric community or a technical support team.