Macos conda激活问题

报错如下：

CommandNotFoundError: Your shell has not been properly configured to use 'conda activate'.
If your shell is Bash or a Bourne variant, enable conda for the current user with

    $ echo ". /Users/wangminghan/anaconda3/etc/profile.d/conda.sh" >> ~/.bash_profile

or, for all users, enable conda with

    $ sudo ln -s /Users/wangminghan/anaconda3/etc/profile.d/conda.sh /etc/profile.d/conda.sh

The options above will permanently enable the 'conda' command, but they do NOT
put conda's base (root) environment on PATH.  To do so, run

    $ conda activate

in your terminal, or to put the base environment on PATH permanently, run

    $ echo "conda activate" >> ~/.bash_profile

Previous to conda 4.4, the recommended way to activate conda was to modify PATH in
your ~/.bash_profile file.  You should manually remove the line that looks like

    export PATH="/Users/wangminghan/anaconda3/bin:$PATH"

^^^ The above line should NO LONGER be in your ~/.bash_profile file! ^^^

解决方法：
出现此报错的原因是因为之前的虚拟环境没有退出source deactivate

重新进入虚拟环境： source activate

退出虚拟环境：source deactivate或conda deactivate