https://danieleriksson.net/2017/02/08/how-to-install-latest-python-on-centos/
Use “make altinstall” to prevent problems
It is critical that you use make altinstall when you install your custom version of Python. If you use the normal make install you will end up with two different versions of Python in the filesystem both named python. This can lead to problems that are very hard to diagnose.
# Python 3.8.5:
wget http://python.org/ftp/python/3.8.5/Python-3.8.5.tar.xz
tar xf Python-3.8.5.tar.xz
cd Python-3.8.5
./configure --prefix=/usr/local --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"
make && make altinstall
# pwd
/usr/local/bin
# ls py*
pydoc3 pydoc3.8 python3.8 python3.8-config
/usr/local/bin/python3.8
/usr/local/bin
# ls py*
pydoc3 pydoc3.8 python3.8 python3.8-config
/usr/local/bin/python3.8
# /usr/local/bin/python3.8
Python 3.8.5 (default, Sep 4 2020, 19:48:39)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cytpes
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cytpes'
>>> exit()
Python 3.8.5 (default, Sep 4 2020, 19:48:39)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cytpes
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cytpes'
>>> exit()
# python3.8
Python 3.8.5 (default, Sep 4 2020, 19:48:39)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cyptes
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cyptes'
Python 3.8.5 (default, Sep 4 2020, 19:48:39)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cyptes
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cyptes'
wget https://bootstrap.pypa.io/get-pip.py
python3.8 get-pip.py
# yum install libffi-devel
已加載插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirror.lzu.edu.cn
* elrepo: mirrors.tuna.tsinghua.edu.cn
* epel: my.mirrors.thegigabit.com
* extras: mirror.lzu.edu.cn
* updates: mirror.lzu.edu.cn
軟件包 libffi-devel-3.0.13-19.el7.x86_64 已安裝並且是最新版本
無須任何處理