Centos 7 默認安裝的python版本為2.7，自己學習需要安裝了個3.5的
1、安裝依賴
1 yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel wget
2、下載3.5的源碼包
1 wget "https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz"
3、解壓
1 tar -zxvf Python-3.5.0.tgz
4、編譯
1 mkdir /usr/local/python3 2 Python-3.5.0/configure --prefix=/usr/local/python3 3 make && make install
5、備份2.7，鏈接3.5
1 mv /usr/bin/python /usr/bin/python.bak 2 ln -s /usr/local/python3/bin/python3 /usr/bin/python
6、修改yun配置文件
1 vim /usr/bin/yum 2 將第一行指定的python版本改為python2.7(#!/usr/bin/python 改為 #!/usr/bin/python2.7)