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更新python

第一步:下載下傳python2.7.4版本源碼:

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

解壓檔案

[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 -

密碼:

[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.sub    configure.ac  Doc   Include  Lib         Mac      Misc             Objects  PC     pyconfig.h.in  README  setup.py    

編譯之前,需要先安裝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編輯器

安裝c編輯器:

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

..略

注:有一個選擇y和n的地方,提示是否繼續下載下傳,輸入y,回車即可!

gcc安裝完成

繼續編譯python

..(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,現在開始更新python,

檢視python指令所在目錄

[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

将/usr/bin/python 的軟連接配接修改為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: 沒有那個檔案或目錄

python指令找不到,這時隻需要将版本python2.7.4指令加入環境變量即可!

方式1:

修改/etc/profile加入如下兩行:

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

export PATH

然後

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

Python 2.7.4

當然也可以建立2.7.4版本的python的軟連接配接:/usr/bin/python

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

亦可

ok,python更新完成

到現在為止,還有最後一件事需要做,那就是yum與python的相容問題:

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

#!/usr/bin/python

第一行修改為

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