linux下centos6.10搭建py2.7版本

1、下载python

在/usr/local下执行wget https://www.python.org/ftp/python/2.7.7/Python-2.7.7.tgz

2、解压、编译安装（依次执行以下5条命令）

tar -zxvf Python-2.7.7.tgz

cd Python-2.7.7

./configure --prefix=/usr/local/python-2.7.7

make

make install

3、为python2.7添加软链接：

ln -s /usr/local/python-2.7.7/bin/python /usr/bin/python2

验证是否成功：

 

4、为pip添加软链接：

在cd /usr/local/bin目录下

 使用软链接：ln -s 源文件 目标文件

ln -s /usr/local/bin/pip2.7  /usr/bin/pip

[aam@Adfuser1-1 bin]$ ln -s /usr/local/bin/pip2.7 /usr/bin/pip
ln: creating symbolic link `/usr/bin/pip': File exists
[aam@Adfuser1-1 bin]$ rm -rf /usr/bin/pip
rm: cannot remove `/usr/bin/pip': Permission denied
[aam@Adfuser1-1 bin]$ sudo rm -rf /usr/bin/pip
[aam@Adfuser1-1 bin]$ ln -s /usr/local/bin/pip2.7 /usr/bin/pip
ln: creating symbolic link `/usr/bin/pip': Permission denied
[aam@Adfuser1-1 bin]$ sudo ln -s /usr/local/bin/pip2.7 /usr/bin/pip
[aam@Adfuser1-1 bin]$ pip

Usage:   
  pip <command> [options]

Commands:
  install                     Install packages.
  download                    Download packages.
  uninstall                   Uninstall packages.
  freeze                      Output installed packages in requirements format.
  list                        List installed packages.
  show                        Show information about installed packages.
  check                       Verify installed packages have compatible dependencies.
  config                      Manage local and global configuration.

验证是否成功，到根目录，直接执行pip list

[root@Adfuser1-1 ~]# pip list
Package    Version
---------- -------
pip        19.3.1 
setuptools 42.0.2 
wheel      0.33.6 
The repository located at mirrors.cloud.aliyuncs.com is not a trusted or secure host and is being ignored. If this repository is available via HTTPS we recommend you use HTTPS instead, otherwise you may silence this warning and allow it anyway with '--trusted-host mirrors.cloud.aliyuncs.com'.
[root@Adfuser1-1 ~]#