升級linux自帶的Python

第一步:下載python2.7.4版本源碼: python

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

解壓文件 bash

[aa@localhost ~]$ tar jxvf Python-2.7.4.tar.bz2 python2.7

[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     編輯器

編譯以前,須要先安裝zlib包: ui

[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 spa

缺乏c編輯器 .net

安裝c編輯器: ip

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

..略

注:有一個選擇y和n的地方,提示是否繼續下載,輸入y,回車便可!

gcc安裝完成

繼續編譯python

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

..(略)

ok編譯成功

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

安裝成功

 

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

目前版本依然是2.4.3,如今開始升級python,

查看python命令所在目錄

[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

將/usr/bin/python 的軟鏈接修改成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: 沒有那個文件或目錄

python命令找不到,這時只須要將版本python2.7.4命令加入環境變量便可!

方式1:

修改/etc/profile加入以下兩行:

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

而後

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

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

固然也能夠建立2.7.4版本的python的軟鏈接:/usr/bin/python

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

亦可

ok,python升級完成

到如今爲止,還有最後一件事須要作,那就是yum與python的兼容問題:

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

#!/usr/bin/python

第一行修改成

#!/usr/bin/python2.4.3(即原始的python變動後的名字)

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