centos下安装python3

下载：

wget -c http://www.python.org/ftp/python/3.1.3/Python-3.1.3.tar.bz2

解压编译安装：

$ tar –jxvf Python-2.5.2.tar.bz2 $ cd Python-2.5.2 $ ./configure $ make $ make install 

由于centos默认安装有2.4，直接输入python进行的是2.4

# python Python 2.4.3 (#1, Dec 11 2006, 11:38:52) [GCC 4.1.1 20061130 (Red Hat 4.1.1-43)] on linux2 Type “help”, “copyright”, “credits” or “license” for more information. >>> 

如下修改可以解决

cd /usr/bin ll |grep python ln -s /root/Python-3.1.3/python ./python 

/root/Python-3.1.3/python为解压目录
现在输入python显示为3.1的了

[root@chxy bin]# python Python 3.1.3 (r313:86834, Jan 2 2011, 02:12:38) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type “help”, “copyright”, “credits” or “license” for more information. >>>