安装库报错没有找到匹配的分布

是没有这个版本的库？

```python
Collecting psutil==5.8.0
  Using cached psutil-5.8.0.tar.gz (470 kB)
  Preparing metadata (setup.py) ... done
Collecting pymongo==3.11.4
  Using cached pymongo-3.11.4.tar.gz (783 kB)
  Preparing metadata (setup.py) ... done
ERROR: Could not find a version that satisfies the requirement redis==3.5.3 (from versions: none)
ERROR: No matching distribution found for redis==3.5.3

```

更新一下pip 或者是后面跟个镜像安装一下 pip3 install reids 安装redis

设置国内镜像源试试
pip install redis==3.5.3 -i https://pypi.tuna.tsinghua.edu.cn/simple