python版本升级及pip部署方法
Python版本升级
CentOS 6.3自带的Python版本为2.6,首先需要升级到2.7版本。由于旧版本的Python已被深度依赖,所以不能卸载原有的Python,只能全新安装。
1.下载Python-2.7.4.tgz
wget http://python.org/ftp/python/2.7.4/Python-2.7.4.tgz
2. 解压安装,命令如下:
1 tar -xvf Python-2.7.4.tgz 2 cd Python-2.7.4 3 ./configure --prefix=/usr/local/python2.7 4 make 5 make install
3. 创建链接来使系统默认python变为python2.7
mv /usr/bin/python /usr/bin/python.old ln -s /usr/local/python2.7/bin/python2.7 /usr/bin/python
4. 查看Python版本
python –V
5. 修改yum配置(否则yum无法正常运行)
vim /usr/bin/yum 将第一行的#!/usr/bin/python修改为系统原有的python版本地址#!/usr/bin/python2.6
至此CentOS6.3系统Python已成功升级至2.7.4版本
Linux下python2.7安装pip
首先下载并安装setuptools:
#wget --no-check-certificate https://bootstrap.pypa.io/ez_setup.py #python ez_setup.py --insecure
再到python官网下载pip安装包,解压到某个位置,我这里下载的是9.0.0版本,然后就可以安装了:
wget https://pypi.python.org/packages/11/b6/abcb525026a4be042b486df43905d6893fb04f05aac21c32c638e939e447/pip-9.0.1.tar.gz#md5=35f01da33009719497f01a4ba69d63c9 tar -xf pip-9.0.1.tar.gz cd pip-9.0.1 python setup.py install
另一种安装pip方法:
Pip是一个安装和管理python包的工具。
安装方法如下:
1. 下载pip,地址 https://bootstrap.pypa.io/get-pip.py
2. 执行安装命令
yum install setuptool zlib* -y python get-pip.py
3. 创建连接(否则会报错提示“命令不存在”)
ln -s /usr/local/python2.7/bin/pip /usr/bin/pip
测试:
[root@localhost ~]# pip install redis Collecting redis /usr/local/python2.7/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Downloading redis-2.10.5-py2.py3-none-any.whl (60kB) 100% |################################| 61kB 759kB/s Installing collected packages: redis Successfully installed redis-2.10.5
至此pip安装完成!
如果安装pip时报如下错误:ImportError: cannot import name HTTPSHandle
执行 yum install sqlite-devel
参考文档:http://www.cnblogs.com/smail-bao/p/6483759.html