将linux默认python升级到2.7.4版本

时间:2021-05-21 05:28:56

第一步:下载python2.7.4版本源码:

wget http://python.org/ftp/python/2.7.4/Python-2.7.4.tgz

解压文件

[aa@localhost ~]$ tar jxvf Python-2.7.4.tar.bz2

[niuxl@localhost ~]$ cd Python-2.7.4
[niuxl@localhost Python-2.7.4]$ ls
config.guess 
configure    
Demo  Grammar 
install-sh  LICENSE 
Makefile.pre.in  Modules 
Parser 
PCbuild       
Python 
RISCOS   
Tools
config.sub   
configure.ac 
Doc   Include 
Lib        
Mac     
Misc            
Objects 
PC     
pyconfig.h.in  README 
setup.py
[niuxl@localhost Python-2.7.4]$ su -
口令:
[root@localhost ~]# mkdir /usr/local/python2.7.4
[root@localhost ~]# cd /home/
[root@localhost home]# cd niuxl/Python-2.7.4
[root@localhost Python-2.7.4]# ls
config.guess 
configure    
Demo  Grammar 
install-sh  LICENSE 
Makefile.pre.in  Modules 
Parser 
PCbuild       
Python 
RISCOS   
Tools
config.sub   
configure.ac 
Doc   Include 
Lib        
Mac     
Misc            
Objects 
PC     
pyconfig.h.in  README 
setup.py

编译之前,需要先安装zlib包:

[root@localhost Python-2.7.4]# yum install zlib zlib-devel
[root@localhost Python-2.7.4]# ./configure
--prefix=/usr/local/python2.7.4
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for --enable-universalsdk... no
checking for --with-universal-archs... 32-bit
checking MACHDEP... linux2
checking EXTRAPLATDIR...
checking for --without-gcc... no
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/home/niuxl/Python-2.7.4':
configure: error: no acceptable C compiler found in $PATH

缺少c编辑器

安装c编辑器:

[root@localhost Python-2.7.4]# yum install gcc

..略

注:有一个选择y和n的地方,提示是否继续下载,输入y,回车即可!

gcc安装完成

继续编译python

[root@localhost Python-2.7.4]# ./configure
--prefix=/usr/local/python2.7.4

..(略)

ok编译成功

[root@localhost Python-2.7.4]# make
&& make install

安装成功

[root@localhost Python-2.7.4]# python -V
Python 2.4.3

目前版本依然是2.4.3,现在开始升级python,

查看python命令所在目录

[root@localhost Python-2.7.4]# whereis python
python: /usr/bin/python2.4 /usr/bin/python /usr/lib/python2.4
/usr/include/python2.4 /usr/share/man/man1/python.1.gz

将/usr/bin/python 的软连接修改为python2.4.3

[root@localhost Python-2.7.4]# mv /usr/bin/python
/usr/bin/python2.4.3

[root@localhost Python-2.7.4]# python
-bash: /usr/bin/python: 没有那个文件或目录

python命令找不到,这时只需要将版本python2.7.4命令加入环境变量即可!

方式1:

修改/etc/profile加入如下两行:

PATH=$PATH:/usr/local/python2.7.4/bin
export PATH

然后

[root@localhost Python-2.7.4]# source /etc/profile

[root@localhost Python-2.7.4]# python -V
Python 2.7.4

当然也可以创建2.7.4版本的python的软连接:/usr/bin/python

[root@localhost ~]# ln -s /usr/local/python2.7.4/bin/python
/usr/bin/python

亦可

ok,python升级完成

到现在为止,还有最后一件事需要做,那就是yum与python的兼容问题:

[root@localhost pipe]# vi /usr/bin/yum

#!/usr/bin/python

第一行修改为

#!/usr/bin/python2.4.3(即原始的python变更后的名字)