在Centos7中安裝pip時，安裝執行命令如下：
yum -y install epel-release
yum -y install python-pip
pip --version 查看pip版本
在執行第一步命令時，報錯：
[root@VM_0_6_centos bin]# yum -y install epel-release
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package epel-release.noarch 0:7-12 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================
Package Arch Version Repository Size
=============================================================================================================
Installing:
epel-release noarch 7-12 epel 15 k
Transaction Summary
=============================================================================================================
Install 1 Package
Total download size: 15 k
Installed size: 24 k
Downloading packages:
File "/usr/libexec/urlgrabber-ext-down", line 28
except OSError, e:
^
SyntaxError: invalid syntax
Exiting on user cancel
這裏應該時我們在Centos7中安裝python3時，把軟連接的python-->python2.7的命令修改爲python --> python3,導致文件"/usr/libexec/urlgrabber-ext-down"中的python版本出現錯誤,這裏只需要將該文本的第一行的#! /usr/bin/python更新爲#! /usr/bin/python2.7即可。
[root@VM_0_6_centos libexec]# vi urlgrabber-ext-down
r/libexec/urlgrabber-ext-down"! /usr/bin/python2.7
# A very simple external downloader
# Copyright 2011-2012 Zdenek Pavlas
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
import time, os, errno, sys
from urlgrabber.grabber import \
_readlines, URLGrabberOptions, _loads, \
PyCurlFileObject, URLGrabError
def write(fmt, *arg):
try: os.write(1, fmt % arg)
except OSError, e:
if e.args[0] != errno.EPIPE: raise
sys.exit(1)
修改完成後，保存退出。然後重複執行以下步驟便可以正常安裝了。
yum -y install epel-release
yum -y install python-pip
pip --version 查看pip版本