1、查看Python版本
4、解压缩Python压缩包
我这里提示报错，原因：缺少编译器。解决方法：安装gcc
6、更改Python默认链接
[root@93 ~]# python -V #注意，是大写的V
Python 2.7.5
2、安装Python可能需要依赖的库
yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel 到Python官网下载 https://www.python.org
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0b5.tgz4、解压缩Python压缩包
[root@Zabbix93 ~]# tar -zxf Python-3.7.0b5.tgz
[root@Zabbix93 ~]# cd Python-3.7.0b5
[root@Zabbix93 Python-3.7.0b5]# ls
aclocal.m4 configure Grammar Lib Mac Modules PC pyconfig.h.in setup.py
config.guess configure.ac Include LICENSE Makefile.pre.in Objects PCbuild Python Tools
config.sub Doc install-sh m4 Misc Parser Programs README.rst5、编译安装Python3.7
./configure --prefix=/usr/local/ //安装到/usr/local目录我这里提示报错，原因：缺少编译器。解决方法：安装gcc
[root@Zabbix93 Python-3.7.0b5]# ./configure --prefix=/usr/local/
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for python3.7... no
checking for python3... no
checking for python... python
checking for --enable-universalsdk... no
checking for --with-universal-archs... no
checking MACHDEP... checking for --without-gcc... no
checking for --with-icc... no
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/root/Python-3.7.0b5':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details
[root@Zabbix93 Python-3.7.0b5]# yum install -y gcc
[root@Zabbix93 Python-3.7.0b5]# ./configure --prefix=/usr/local/
[root@Zabbix93 Python-3.7.0b5]# make
[root@Zabbix93 Python-3.7.0b5]# make altinstall //此处不能用install安装，因为install不区分版本，会出现多版本混乱的问题
python3.7程序的执行文件：/usr/local/bin/python3.7
python3.7应用程序目录：/usr/local/lib/python3.7
pip7的执行文件：/usr/local/bin/pip3.7
pyenv3的执行文件：/usr/local/bin/pyenv-3.7
更改Python默认链接：
# cd/usr/bin
# mv python python.backup
# ln -s /usr/local/bin/python3.7 /usr/bin/python
# ln -s /usr/local/bin/python3.7 /usr/bin/python3
