linux 安装 python3

软件源

1. 下载软件

   mkdir -p /soft 
   cd /soft 
   wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tgz
   yum install sqlite-devel

2. 安装

   tar xf Python-3.6.6.tgz
   cd Python-3.6.6
   mkdir -p /usr/local/python3
   ./configure --prefix=/usr/local/python3
   make && make install

3. 配置环境变量

   ln -s /usr/local/python3/bin/python3 /usr/bin/python3
   vim ~/.bash_profile
   	PATH=$PATH:$HOME/bin:/usr/local/python3/bin
   source ~/.bash_profile

4. ssl相关

python在使用时，可能会使用ssl模块。所以在编译时，可以直接将ssl模块编译进去。

yum install openssl
yum install openssl-devel -y
cd Python-3.6.6
vi Modules/Setup #修改文件如下

	# Socket module helper for socket(2)
	_socket socketmodule.c

	# Socket module helper for SSL support; you must comment out the other
	# socket line above, and possibly edit the SSL variable:
	SSL=/usr/local/ssl
	_ssl _ssl.c \
        -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
        -L$(SSL)/lib -lssl -lcrypto

然后进行编译安装即可