【Untitled】NO module named 'yaml'

Error steps:

        The problem shows: NO module named 'yaml'

                    

 

        Install: conda install -c conda-forge yaml

        Verification: conda list shows that yaml is installed

        Running again: Display: NO module named 'yaml'

        Solution: pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn pyyaml

        Result: works fine