安装
~~~
yum -y groupinstall "Development tools"
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
if [ ! -f Python-3.6.5.tar.xz ]; then
wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tar.xz
fi
rm -rf Python-3.6.5
tar xvJf Python-3.6.5.tar.xz
mkdir /usr/local/python3
cd Python-3.6.5
./configure --prefix=/usr/local/python3
make
make install > python_install.log
sed -i '1s/python/python2.7/' /usr/bin/yum
sed -i '1s/python/python2.7/' /usr/libexec/urlgrabber-ext-down
sed -i '1s/python/python2.7/' /usr/bin/yum-config-manager
mv /usr/bin/python /usr/bin/python_bak
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/python3 /usr/bin/python
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip
pip install gitpython
pip list
~~~
卸载
~~~
rm -rf /usr/bin/python
rm -rf /usr/bin/python3
rm -rf /usr/bin/pip
rm -rf /usr/bin/pip3
mv /usr/bin/python_bak /usr/bin/python
rm -rf /usr/local/python3
sed -i '1s/python2.7/python/' /usr/bin/yum
sed -i '1s/python2.7/python/' /usr/libexec/urlgrabber-ext-down
sed -i '1s/python2.7/python/' /usr/bin/yum-config-manager
~~~
验证
~~~
python -V
~~~
检测yum
~~~
head -n 1 /usr/bin/yum
head -n 1 /usr/libexec/urlgrabber-ext-down
head -n 1 /usr/bin/yum-config-manager
~~~
3.修改yum配置文件
因为yum使用python2，因此替换为python3后可能无法正常工作，继续使用这个python2.7.5
因此修改yum配置文件(vi /usr/bin/yum)。
把文件头部的#!/usr/bin/python改成#!/usr/bin/python2.7保存退出即可。
因为yum使用python2，因此替换为python3后可能无法正常工作，继续使用这个python2.7.5因此修改yum配置文件(vi /usr/bin/yum)。把文件头部的#!/usr/bin/python改成#!/usr/bin/python2.7保存退出即可
1. vim /usr/libexec/urlgrabber-ext-down
将/usr/bin/python改为/usr/bin/python2.7。
2. vim /usr/bin/yum-config-manager
解决办法同上： #!/usr/bin/python换成 #!/usr/bin/python2.7
