问题1

Solving environment: failed

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/linux-64/repodata.json>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.
SSLError(MaxRetryError('HTTPSConnectionPool(host=\'mirrors.tuna.tsinghua.edu.cn\', port=443): Max retries exceeded with url: /anaconda/cloud/pytorch/linux-64/repodata.json (Caused by SSLError(SSLError("bad handshake: Error([(\'SSL routines\', \'ssl3_get_server_certificate\', \'certificate verify failed\')])")))'))

解决方法

有些博客写的

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/

问题就出在这个https，改为http，也就是不加's'，就好了。具体如下：

执行conda config --remove-key channels，删除添加的源，重新执行

conda config --add channels http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/

问题2

pytorch、cudatoolkit、torchvision包下载速度缓慢，

添加pytorch源，删除语句'-c pytorch'参考如下：

 pytorch下载速度缓慢的完美解决方案_AI从入门到实践的博客-CSDN博客_pytorch下载太慢