wget new python
tar -zxvf /root/Python-3.5.2.tgz
yum install -y readline-devel* #readline开发包,用于解决update后secureCRT键盘映射不正常
yum install -y gcc* #编译安装需要
mkdir /usr/local/python3
./configure prefix=/usr/local/python3
make && make install
mv /usr/bin/python /usr/bin/python_old2 #移除旧版py命令
/etc/profile
PATH=$PATH:/usr/local/python3/bin
export PATH
ln -s /usr/local/python3/bin/python /usr/bin/python
vim /usr/bin/yum
#!/usr/bin/python —>/usr/bin/python_old2
