Conda在下载安装包时报错：

PackagesNotFoundError: The following packages are not available from current channels:

  - XXXXXX（包名）

有如下两种解决方法：

方法一：将conda-forge添加到搜索路径上

        在命令行运行下方指令，然后重新安装。

conda config --append channels conda-forge

conda install 需要安装的包名

方法二：在官网搜索相关包的安装指令并运行

        点击命令行提示的连接，即官网： https://anaconda.org ，在页面搜索需要的包，复制下方任意一条指令在命令行运行即可。

PackagesNotFoundError: The following packages are not available from current channels:

  - beautifulsoup

Current channels:

  - https://conda.anaconda.org/conda-forge
  - https://conda.anaconda.org/bioconda
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro
  - defaults

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

        进入主页搜索：

        复制官网提供的命令： 

        在命令行运行命令：