標籤:python
centOS下的Python版本一般都比較低,很多應用都需要升級python來完成。我裝的centOS的預設的python版本是V2.6.3,但運行node.js需要的版本是2.5以上。
1。下載python3.3安裝包:
yum install readline-devel.x86_64
wget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgz
2。解壓安裝包:tar -zxvf Python-3.5.2.tgz
3。進入解壓後目錄:cd Python-3.5.2
4。建立安裝目錄: mkdir /usr/local/python3.5
5。編譯安裝: ./configure --prefix=/usr/local/python3.5
6。執行:make && make install
7。此時已完成新版本的安裝,但由於老版本還在系統中,所以需要將原來/usr/bin/python連結改為新的串連:
a.先修改老的串連,執行:mv /usr/bin/python /usr/bin/python_bak。
b.再建立新串連:ln -s /usr/local/python3.5/bin/python3.5 /usr/bin/python
c.設定環境變數PATH=$PATH:/usr/local/python3.5/bin/
8。查詢python版本,執行:python --version
Python 3.5.2
已安裝成功了。
修改yum裡python解析器為Python2.6
vim /usr/bin/yum #修改第一行
#!/usr/bin/python2.6
如果自訂安裝的Python 3.5.2退格鍵和箭頭無法正常使用,
yum install readline-devel.x86_64
再重新configure、make、make install,搞定!!
[[email protected] ~]# cat python_install.sh
#!/bin/bashyum install readline-devel.x86_64version=2.7.9main=2.7cd ~wget https://www.python.org/ftp/python/$version/Python-$version.tgztar -zxvf Python-$version.tgzcd Python-$versionmkdir /usr/local/python$version./configure --prefix=/usr/local/python$versionmake && make installmv /usr/bin/python /usr/bin/python_bakln -s /usr/local/python$version/bin/python$main /usr/bin/pythonPATH=$PATH:/usr/local/python$version/python --versioncd ~rm -rf Python-$version.tgz Python-$version
linux(CentOS)下升級python3.5.2