如何在linux系统中安装python 如何在linux系统中安装python?
\u5982\u4f55\u5728linux\u73af\u5883\u5b89\u88c5python\u8f6f\u4ef6Linux\u5b89\u88c5python\u73af\u5883\u65b9\u6cd5
1\u3001\u6253\u5f00WEB\u6d4f\u89c8\u5668\u8bbf\u95ee\u5b98\u7f51\u3002
2\u3001\u9009\u62e9\u9002\u7528\u4e8eUnix/Linux\u7684\u6e90\u7801\u538b\u7f29\u5305\u3002
3\u3001\u4e0b\u8f7d\u53ca\u89e3\u538b\u538b\u7f29\u5305\u3002
4\u3001\u5982\u679c\u4f60\u9700\u8981\u81ea\u5b9a\u4e49\u4e00\u4e9b\u9009\u9879\u4fee\u6539Modules/Setup
5\u3001\u6267\u884c ./configure \u811a\u672c
6\u3001make
7\u3001make install
8\u3001\u6267\u884c\u4ee5\u4e0a\u64cd\u4f5c\u540e\uff0cPython\u4f1a\u5b89\u88c5\u5728 /usr/local/bin \u76ee\u5f55\u4e2d\uff0cPython\u5e93\u5b89\u88c5\u5728/usr/local/lib/pythonXX\uff0cXX\u4e3a\u4f60\u4f7f\u7528\u7684Python\u7684\u7248\u672c\u53f7\u3002
linux\u7cfb\u7edf\u4e2d\u5b89\u88c5python\u5305\u62ec\u4ee5\u4e0b\u4e09\u4e2a\u6b65\u9aa4\uff1a
1\u3001\u4e0b\u8f7d\u6e90\u4ee3\u7801
2\u3001\u5b89\u88c5
$ tar \u2013jxvf Python-2.5.2.tar.bz2
$ cd Python-2.5.2
$ ./configure
$ make
$ make install
3\u3001\u6d4b\u8bd5
\u5728\u547d\u4ee4\u884c\u4e0b\u8f93\u5165python\uff0c\u51fa\u73b0python\u89e3\u91ca\u5668\u5373\u8868\u793a\u5df2\u7ecf\u6b63\u786e\u5b89\u88c5\u3002
\u5728suse10\u6216rhel5\uff08es5\uff09\u4e0b\u7cfb\u7edf\u9ed8\u8ba4\u5df2\u7ecf\u88c5\u4e86python\u4f46\u7248\u672c\u662f2.4.x\uff1b\u672c\u6b21\u5b89\u88c5\u540e\u5728shell\u4e2d\u8f93\u5165
#python
\u4f1a\u53d1\u73b0\u663e\u793a\u7ed3\u679c\uff1a
# 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 \u201chelp\u201d, \u201ccopyright\u201d, \u201ccredits\u201d or \u201clicense\u201d for more information.
>>>
\u7248\u672c\u8fd8\u662f2.4.x\u7684
\u89e3\u51b3\u529e\u6cd5\uff1a
#cd /usr/bin
#ll |grep python //\u67e5\u770b\u8be5\u76ee\u5f55\u4e0bpython
#rm -rf python
#ln -s PREFIX/Python-2.5.2/python ./python //PREFIX\u4e3a\u4f60\u89e3\u538bpython\u7684\u76ee\u5f55
#python
# python
Python 2.5.2 (#1, Dec 11 2006, 11:38:52)
[GCC 4.1.1 20061130 (Red Hat 4.1.1-43)] on linux2
Type \u201chelp\u201d, \u201ccopyright\u201d, \u201ccredits\u201d or \u201clicense\u201d for more information.
>>>
\u5b89\u88c5\u6d4b\u8bd5\u5b8c\u6bd5\u3002
2． 安装
$ tar –jxvf Python-2.5.2.tar.bz2
$ cd Python-2.5.2
$ ./configure
$ make
$ make install
3. 测试
在命令行下输入python，出现python解释器即表示已经正确安装。
在suse10或rhel5（es5）下系统默认已经装了python但版本是2.4.x；本次安装后在shell中输入
#python
会发现显示结果：
# 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.
>>>
版本还是2.4.x的
解决办法：
#cd /usr/bin
#ll |grep python //查看该目录下python
#rm -rf python
#ln -s PREFIX/Python-2.5.2/python ./python //PREFIX为你解压python的目录
#python
# python
Python 2.5.2 (#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.
>>>
OK！问题解决！
已经存在python2的linux环境上安装python3，有两种方法，第一种是替换python2，第二种是直接安装python3，而不替换python2，这样的话，在python3运行的时候，就要写成python3+启动等语句
linux基本都是自带python啊，不信你输入python试试。
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