VPS 的 CentOS6 升级 Python 的方法

VPS 的 CentOS6 升级 Python 的方法

centos默认安装python2.6。由于python和centos关联紧密，所以不建议卸载，进行编译升级

1.新开的VPS务必系统更新

yum -y update

yum groupinstall -y development or; yum groupinstall -y 'development tools'

yum install -y zlib-dev zlib-devel  openssl-devel sqlite-devel bzip2-devel xz-libs



2.升级python>=2.7



编译参看： https://www.digitalocean.com/community/tutorials/how-to-set-up-python-2-7-6-and-3-3-3-on-centos-6-4

wget http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz

wget http://www.python.org/ftp/python/3.3.3/Python-3.3.3.tar.xz

xz -d Python-2.7.6.tar.xz

tar -xvf Python-2.7.6.tar

xz -d Python-3.3.3.tar.xz

tar -xvf Python-3.3.3.tar



# Enter the file directory:

cd Python-2.7.6



# Start the configuration (setting the installation directory)

# By default files are installed in /usr/local.

# You can modify the --prefix to modify it (e.g. for $HOME).

./configure --prefix=/usr/local  



cd Python-3.3.3    

./configure



为了不覆盖系统默认选项 - 替换系统正在使用的PYTHON- 我们使用 make altinstall.



# Let's build (compile) the source

# This procedure can take awhile (~a few minutes)

make



# After building everything:

make altinstall



    Example for version 3.3.3:



make && make altinstall   # <--- Two commands joint together





我们直接进行

make

make install



3.建立软连接

编译的软件安装于 /usr/local/bin/python2.7

所以需要替换原来的 /usr/bin/python



mv /usr/bin/python /usr/bin/python2.6

rm /usr/bin/python

ln -s /usr/local/bin/python2.7 /usr/bin/python



vim /usr/bin/yum



/usr/bin/python 改成 /usr/bin/python2.6



4.更新 pip



https://bootstrap.pypa.io/get-pip.py

wget https://raw.github.com/pypa/pip/master/contrib/get-pip.py

python get-pip.py



ln -s /usr/local/bin/pip /usr/bin/pip



如果wget下载不了这文件，可能是DNS解析问题，需要下载个文件

vi /etc/resolv.conf

nameserver 8.8.4.4

nameserver 8.8.8.8