1）获取Python-3.9.10.tgz。
2）sudo yum install gcc openssl-devel bzip2-devel libffi-devel zlib-devel
3）tar -xf Python-3.9.10.tgz
4）cd Python-3.9.10
5) ./configure --enable-optimizations --enable-shared LDFLAGS=“-Wl,-rpath /usr/local/lib”
6) make altinstall
7) /usr/local/bin/python3.9 -V
8) echo ‘export PATH=“/usr/local/bin:$PATH”’ >> ~/.bashrc
9) source ~/.bashrc
10) python3.9 --version