1. 首先，更新系统：sudo yum update
2. 接着，安装Python3的依赖库：sudo yum install python3-devel
3. 然后，安装postgresql15-contrib依赖的其它库：sudo yum install libffi-devel openssl-devel
4. 如果仍然无法解决问题，可以手动安装Python共享库： 1）下载Python共享库：wget https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz 2）解压文件：tar xzf Python-3.8.6.tgz 3）进入解压后的目录：cd Python-3.8.6 4）进行配置与编译：./configure && make 5）安装Python：sudo make install
5. 最后，重新安装postgresql15-contrib：sudo yum install postgresql15-contrib

代码示例：

sudo yum update sudo yum install python3-devel sudo yum install libffi-devel openssl-devel wget https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz tar xzf Python-3.8.6.tgz cd Python-3.8.6 ./configure && make sudo make install sudo yum install postgresql15-contrib