1、安装依赖包

1)首先安装gcc编译器,gcc有些系统版本已经默认安装,通过 gcc --version 查看,没安装的先安装gcc,yum -y install gcc

2)安装其它依赖包,(注:不要缺少,否则有可能安装python出错,python3.7.0以下的版本可不装 libffi-devel )

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel

2)下载

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz 3)、解压Python-3.7.0.tgz

tar -zxvf Python-3.7.0.tgz

4、建立一个空文件夹,用于存放python3程序        

mkdir /usr/local/python3

5、执行配置文件,编译,编译安装            

cd Python-3.7.0 ./configure --prefix=/usr/local/python3 make && make install 安装完成没有提示错误便安装成功了

7、建立软连接                     

ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3 ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3

8、测试一下python3是否可以用              

复制代码 [root@instance-rupxcbi1 Python-3.7.0]# python3 Python 3.7.0 (default, Oct 28 2019, 09:09:57) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information.

print("hello word") hello word

exit()

可以看到python3.7.0可以正常使用