centos安装python3

Posted 2021-03-11 RoadWide

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python3.7.0源码，根据需求下载

1）在https://www.python.org/ftp/python/中选择自己需要的python源码包，我下载的是python3.7.0

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

6、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

7、测试一下python3是否可以用

[root@mini Python-3.7.0]# python3
Python 3.7.0 (default, Jul 28 2018, 22:47:29)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> print("hello world!")
hello world!
>>> exit()
[root@mini Python-3.7.0]# pip3 --version
pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)

可以看到python3.7.0可以正常使用