CentOS6.4升级python2.7.6
升级说明：在升级python之前，必须保证pip/setuptools未安装， 否则会有各种巨坑。一. 升级前的准备
先安装必要的包，次步不做的话，后面会有各种各样的坑等着你 ，乖乖的装吧！
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yum install readline-devel sqlite-devel bzip2-devel openssl-devel gdbm-devel libdbi-devel ncurses-libs zlib-devel -y
二.下载
(1)下载地址:
wget https://www.python.org/ftp/python/2.7.6/Python-2.7.6.tgz
tar -zxvf Python-2.7.6.tgz
cd Python-2.7.6
./configure --prefix=/usr/local/python2.7
make && make install
make clean
make distclean
mv /usr/bin/python /usr/bin/python2.6.6
ln -s /usr/local/python2.7/bin/python2.7 /usr/bin/python
以下修改是为了使yum能够正常使用
# vim /usr/bin/yum
将第一行注释部分的
#!/usr/bin/python 修改为
#!/usr/bin/python2.6.6
(2) 下载并安装setuptools
wget http://pypi.douban.com/packages/source/s/setuptools/setuptools-12.0.5.tar.gz
tar zxvf setuptools-12.0.5.tar.gz
cd setuptools-12.0.5
python setup.py build
python setup.py install
环境变量
vi /etc/profile
添加如下内容：
PY_EZ=/usr/local/python2.7
export PATH=$PY_EZ/bin:$PATH
source /etc/profile# 当前终端生效，reboot后才会完全生效
echo $PATH
(3)安装pip
easy_install -i http://pypi.douban.com/simple pip
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