近期在跑模型代码的时候，出现报错：
网上有很多方式，但是过程复杂，经过尝试，用下面的方法解决了：
pip install -U nltk然后提示安装成功！
Collecting nltk
Downloading https://pypi.tuna.tsinghua.edu.cn/packages/43/0b/8298798bc5a9a007b7cae3f846a3d9a325953e0f9c238affa478b4d59324/nltk-3.7-py3-none-any.whl (1.5 MB)
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Requirement already satisfied: joblib in /home/hao/anaconda3/envs/wh_cuda11.6/lib/python3.9/site-packages (from nltk) (1.1.0)
Requirement already satisfied: regex>=2021.8.3 in /home/hao/anaconda3/envs/wh_cuda11.6/lib/python3.9/site-packages (from nltk) (2022.9.13)
Requirement already satisfied: tqdm in /home/hao/anaconda3/envs/wh_cuda11.6/lib/python3.9/site-packages (from nltk) (4.64.0)
Requirement already satisfied: click in /home/hao/anaconda3/envs/wh_cuda11.6/lib/python3.9/site-packages (from nltk) (8.1.3)
Installing collected packages: nltk
Successfully installed nltk-3.7