linux安装pytorch时collecting package error

在安装pytorch过程中出现collecting package error，建议先检查网络连接是否正常。如果网络连接正常，可以尝试使用以下方法进行解决：

1. 清空缓存

使用pip安装pytorch时，可能会在缓存中找到错误的包。可以执行以下命令清空缓存：

pip cache purge

2. 更换源地址

可以将pip默认的安装源地址修改为其他可用的源地址，例如清华、阿里或中科大等。以清华镜像为例，执行以下命令修改源地址：

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple torch

3. 手动下载安装包

可以从pytorch官网中下载对应版本的tar包，手动进行安装。下载地址为：https://pytorch.org/get-started/locally/

下载后执行以下命令进行安装：

pip install <下载的tar包路径>

总之，在安装pytorch时，出现collecting package error的问题可以通过清空缓存、更换源地址或手动下载安装包等方式进行解决。

相关问题

pytorch虚拟环境创建失败, 错误提示Collecting package metadata (current_repoddata.json): failed

Sorry, it seems like there was an error in creating a virtual environment for pytorch. Can you provide more details about the error message and the steps you took to create the virtual environment? I'll do my best to help you troubleshoot the problem.

(pytorch) D:\Python\PythonCharm\STUDY_CNN>conda install opencv-python Collecting package metadata (current_repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Collecting package metadata (repodata.json

It seems like the installation of the package opencv-python has failed. The error message indicates that the initial frozen solve has failed and the environment is retrying with a flexible solve. This can happen when there are conflicting dependencies or when the package repository is not up-to-date.

You can try updating the conda package repository by running the following command:

conda update conda

Then, try installing the opencv-python package again using the following command:

conda install opencv-python

If the issue persists, you can try creating a new conda environment and installing the package in that environment.