linux系统中存在Python情况共存安装新版Python及pip安装

参考 https://blog.csdn.net/wowocpp/article/details/80710984

安装setuptools，要需要安装zlib：

yum install zlib zlib-dev 
为在python编译时加入ssl模块，yum安装openssl和openssl-devel

sudo  yum install openssl
 sudo yum install openssl-devel
sudo yum install ncurses-libs
sudo yum install readline-devel
 sudo yum install sqlite-devel
 sudo yum install bzip2-devel
sudo yum install gdbm-devel
 sudo yum install libdbi-devel

下载解压

cd /usr/local/src

wget https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz

 

tar zvxf Python-2.7.13.tgz

配置

./configure --prefix=/usr/local/python27/

编译

sudo make

sudo make install

查看原来的连接

[root@slave6 bin]# ll /usr/bin/python*
lrwxrwxrwx 1 root root 33 Aug 21 14:51 /usr/bin/python -> /usr/local/python27/bin/python2.7
lrwxrwxrwx. 1 root root 6 Aug 12 11:34 /usr/bin/python2 -> python

修改连接

sudo mv /usr/bin/python2 /usr/bin/python2_old
sudo mv /usr/bin/python2.7 /usr/bin/python2.7.5
sudo mv /usr/bin/python /usr/bin/python_old

sudo ln -s /usr/local/python27/bin/python2.7 /usr/bin/python2
sudo ln -s /usr/bin/python2 /usr/bin/python

[root@slave6 bin]# python -V
Python 2.7.13

其中用到了 python2 的目的是 ，以后有可能会用到python3 
/usr/bin/python2 和 /usr/bin/python2.7 应该需要删掉  因为有的python 脚本里面会注明使用 /usr/bin/python2

 

安装Python 2.7.13对应的pip

wget https://bootstrap.pypa.io/get-pip.py

sudo python get-pip.py

替换原来的pip

[root@slave6 src]# ll /usr/bin/pip*

sudo mv /usr/bin/pip /usr/bin/pip_old
sudo mv /usr/bin/pip2 /usr/bin/pip2_old
sudo mv /usr/bin/pip2.7 /usr/bin/pip2.7_old

sudo cp /usr/local/python27/bin/pip* /usr/bin/

[root@slave6 src]# pip -V
pip 18.1 from /usr/local/python27/lib/python2.7/site-packages/pip (python 2.7)