在使用pip进行软件包安装的时候出现问题：
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

解决：

mkdir -p ~/.pip
vim ~/.pip/pip.conf

然后输入内容：

[global]
index-url = http://mirrors.aliyun.com/pypi/simple/[install]
trusted-host = mirrors.aliyun.com

再次使用pip安装即可。

参考：https://blog.csdn.net/witton/article/details/109352577?spm=1001.2101.3001.6650.15&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-15-109352577-blog-128715977.235%5Ev43%5Epc_blog_bottom_relevance_base2&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-15-109352577-blog-128715977.235%5Ev43%5Epc_blog_bottom_relevance_base2