Centos 7.4 python2.7.5升级到3.5.5

1.下载python3.5.5

wget https://www.python.org/ftp/python/3.5.5/Python-3.5.5.tgz

2.安装

tar -zxvf Python-3.5.5.tgz                      #解压
cd Python-3.5.5                                 #进入解压目录
mkdir /usr/local/python3.5.5                    #创建安装目录 
./configure --prefix=/usr/local/python3.5.5     #编译 
make                                            #安装
make install
mv /usr/bin/python /usr/bin/python_2.7.5        #备份原有python
ln -s /usr/local/python3.5.5/bin/python3.5 /usr/bin/python  
                                                #创建软连接
python --version                                #查看版本
结果打印。。。
Python 3.5.5

成功啦~~~