CentOS7.3编译安装python3.6
5.1修改软链接以及相关操作mv /usr/bin/python2.7 /usr/bin/python2.7.5 #先更改python2.7的名字
rm /usr/bin/python -r #删除原先的软链接
ln -s /usr/bin/python2.7.5 /usr/bin/python2.7 #将python2.7环境软链接至/usr/bin/python2.7
ln -s /usr/local/python3/bin/python3.6 /usr/bin/python #将python3.6环境软链接至/usr/bin/python
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip #将pip3软链接至/usr/bin/pip
python -V #查看目前使用的python版本
Python 3.6.2rc1
pip -V #查看pip版本
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
python2.7 -V
Python 2.7.5 #当然你也可以使用python2.7.5
yum repolist #测试yum环境，yum环境失效
# yum repolist
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
File "/usr/libexec/urlgrabber-ext-down", line 28 #报错位置
except OSError, e:
^
SyntaxError: invalid syntax
File "/usr/libexec/urlgrabber-ext-down", line 28
except OSError, e:
^
SyntaxError: invalid syntax
Exiting on user cancel
5.2恢复yum环境相关操作
vi /usr/bin/yum
第一行修改为
#!/usr/bin/python2.7
vi /usr/libexec/urlgrabber-ext-down
第一行修改为
#!/usr/bin/python2.7
5.3测试yum环境
yum repolist #再次测试yum环境，yum环境正常
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
repo id repo name status
cd cd 9,363
centos centos repository 9,363
epel extra packages for enterprise linux 11,349
repolist: 30,075
页:
[1]