Centos 安装python 3.7 ,同时兼容python2.7

下载Python源码

从http://www.python.org/download/根据需要的版本下载源文件。

例如上图就是我在官网直接找到3.5.6版本的下载页面，点击的tar源码包进行下载。

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1. 安装依赖环境

　　# 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

　　# yum install gcc
　　　　yum install libffi-devel -y 

 

yum install mysql-devel gcc gcc-devel python-devel -y

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# tar -zxvf Python-3.6.1.tgz

进入解压后的目录，编译安装。

cd Python-3.6.1

./configure --prefix=/usr/local/python3

make && make install

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如果 报错 

ModuleNotFoundError: No module named ‘_ctypes’ make: *** [install] Error 1

yum install libffi-devel -y    《-安装这个就能解决

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建立python3的软链

# ln -s /usr/local/python3/bin/python3 /usr/bin/python3

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

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检查Python3及pip3是否正常可用：

 

python3 -V

pip3 -V

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https://www.cnblogs.com/tielemao/p/9480611.html

https://www.cnblogs.com/kimyeee/p/7250560.html

http://www.kaaer.cn/archives/811