安装pip2.7必须先安装先python2.7。如果用python2.6安装的pip，则pip版本就是pip2.6。
前面文章已经介绍了python2.7的安装方法，这里不再介绍。
pip2.7的安装
1、安装setuptools
下载地址：https://pypi.python.org/pypi?%3Aaction=search&term=setuptools&submit=search
安装：
2、安装pip
安装：
3、创建软连接ln -s /usr/local/python27/bin/pip2.7 /usr/bin/pip2.7
注意：pip2.7安装完成后，生成的执行文件在python2.7的bin目录下[root@dnsserver bin]# ll
total 6184
-rwxr-xr-x 1 root root 110 Jan 9 10:31 2to3
-rwxr-xr-x 1 root root 326 Jan 9 10:59 easy_install
-rwxr-xr-x 1 root root 334 Jan 9 10:59 easy_install-2.7
-rwxr-xr-x 1 root root 108 Jan 9 10:31 idle
-rwxr-xr-x 1 root root 284 Jan 9 11:00 pip
-rwxr-xr-x 1 root root 286 Jan 9 11:00 pip2
-rwxr-xr-x 1 root root 290 Jan 9 11:00 pip2.7
-rwxr-xr-x 1 root root 93 Jan 9 10:31 pydoc
lrwxrwxrwx 1 root root 7 Jan 9 10:31 python -> python2
lrwxrwxrwx 1 root root 9 Jan 9 10:31 python2 -> python2.7
-rwxr-xr-x 1 root root Jan 9 10:31 python2.7
-rwxr-xr-x 1 root root 1696 Jan 9 10:31 python2.7-config
lrwxrwxrwx 1 root root 16 Jan 9 10:31 python2-config -> python2.7-config
lrwxrwxrwx 1 root root 14 Jan 9 10:31 python-config -> python2-config
-rwxr-xr-x 1 root root 18556 Jan 9 10:31 smtpd.py[root@dnsserver bin]# pip2.7
Usage:
pip [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.
search Search PyPI for packages.
wheel Build wheels from your requirements.
hash Compute hashes of package archives.
completion A helper command used for command completion
help Show help for commands.
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