错误如下：

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 ". /home/ubuntu/anaconda3/etc/profile.d/conda.sh" >> ~/.bashrc

or, for all users, enable conda with

$ sudo ln -s /home/ubuntu/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" >> ~/.bashrc

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

export PATH="/home/ubuntu/anaconda3/bin:$PATH"

^^^ The above line should NO LONGER be in your ~/.bashrc file! ^^^
这是由于conda的激活命令出了问题，解决方法如下：

# 激活环境
source activate
# 退出环境
source deactivate
随后解决问题。

可以进行激活环境了：

conda activate your-env-name
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原文链接：https://blog.csdn.net/weixin_42652125/article/details/87697902