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python---linux下升级python的版本 有大用
我的升级方法 有大用
1) 到 cd /usr/local
2) wget https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tgz
https://www.python.org/ftp/python/2.7.9/ 要升级到2.7.9的版本 这个链接看应该wget 哪个url
3)tar -xzvf Python-2.7.9.tgz
4)mkdir python (如果 本来有python目录的话 我就建另一个名python279)
5)cd Python-2.7.9
6)
8)
14) vi /usr/bin/yum
把第一行 #!/usr/bin/python
修改为 #!/usr/bin/python2.4
1) 到 cd /usr/local
2) wget https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tgz
https://www.python.org/ftp/python/2.7.9/ 要升级到2.7.9的版本 这个链接看应该wget 哪个url
3)tar -xzvf Python-2.7.9.tgz
4)mkdir python (如果 本来有python目录的话 我就建另一个名python279)
5)cd Python-2.7.9
6)
./configure --prefix=/usr/local/python
(如果目录是python279,这里是 /usr/local/python279)
发现 如果“./configure”里面有提示“configure: error: no acceptable C compiler found in $PATH”， 错误
7) yum install gcc -y8)
./configure --prefix=/usr/local/python
9)make
10)make install
11) mv /usr/bin/python /usr/bin/python_old
12) ln -s /usr/local/python/bin/python /usr/bin/python
(如果目录是python279,这里是 /usr/local/python279/bin/python)
13) python -V 看下版本 是不是我们的新版本14) vi /usr/bin/yum
把第一行 #!/usr/bin/python
修改为 #!/usr/bin/python2.4
5月23日 西安 OSC 源创会开始报名啦，存储、虚拟机、Docker 等干货分享
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0赞原文地址：http://liluo.org/2010/08/centos-5-5-%E4%B8%AD-python-%E5%8D%87%E7%BA%A7%E5%88%B0-2-6-5/
来自 http://my.oschina.net/zhangdapeng89/blog/53644
来自 http://my.oschina.net/zhangdapeng89/blog/53644
首先下载源tar包
可利用linux自带下载工具wget下载，如下所示：
1 | # wget http://www.python.org/ftp/python/3.3.0/Python-3.3.0.tgz |
或自己去网上找，这里提供一个最新版的下载链接：http://xiazai.zol.com.cn/detail/33/320958.shtml
这里我用的是第二种方法，下载的是Python-3.1.2.tar.bz2版本，下载完成后到下载目录下，解压
1 | bunzip2 Python-3.1.2.tar.bz2 |
2 | |
进入解压缩后的文件夹
1 | cd Python-3.1.2 |
在编译前先在/usr/local建一个文件夹python3（作为python的安装路径，以免覆盖老的版本）
1 | mkdir /usr/local/python3 |
开始编译安装
1 | ./configure --prefix=/usr/local/python3 |
2 | make |
3 | make install |
此时没有覆盖老版本，再将原来/usr/bin/python链接改为别的名字
1 | mv /usr/bin/python /usr/bin/python_old |
再建立新版本python的链接
1 | ln -s /usr/local/python3/bin/python3 /usr/bin/python |
这个时候输入
1 | python |
就会显示出python的新版本信息
1 | Python 3.1.2 (r312:79147, Oct 21 2012, 01:03:21)) |
2 | [GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] on linux2 |
3 | Type "help", "copyright", "credits" or "license" for more information. |
4 | >>> |
PS：如果不建立新安装路径python3，而是直接默认安装，则安装后的新python应该会覆盖linux下自带的老版本，也有可能不覆盖，具体看安装过程了，这个大家可以自己试验下，当然如果还想保留原来的版本，那么这种方法最好不过了。
来自 http://www.cnblogs.com/lanxuezaipiao/archive/2012/10/21/2732864.html
眼看着python3 都出来了，vps上用的还是2.4的版本额，确实汗了一把。决定升级下python。
python2.7是2.X的最后一个版本，同时她也加入了一部分3.X的新特性。so 让我们升级吧！
查看系统当前python版本
2: [root@wangyuelou ~]# python
1:
3: Python 2.4.3 (#1, May 5 2011, 16:39:10)
4: [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
5: Type "help", "copyright", "credits" or "license" for more information.
6: >;>>
7: [root@wangyuelou ~]#
下载新版本的python
解压缩 以及编译
1: [root@wangyuelou ~]# tar xvf Python-2.7.2.tar.bz2
2: [root@wangyuelou Python-2.7.2]# ./configure --prefix=/usr/local/python27
3: [root@wangyuelou Python-2.7.2]# make
4: [root@wangyuelou Python-2.7.2]# make install
5: [root@wangyuelou Python-2.7.2]# ls /usr/local/python27/ -al
6: total 28
7: drwxr-xr-x 6 root root 4096 Jul 14 00:21 .
8: drwxr-xr-x 20 root root 4096 Jul 14 00:17 ..
9: drwxr-xr-x 2 root root 4096 Jul 14 00:21 bin
10: drwxr-xr-x 3 root root 4096 Jul 14 00:21 include
11: drwxr-xr-x 4 root root 4096 Jul 14 00:21 lib
12: drwxr-xr-x 3 root root 4096 Jul 14 00:21 share
覆盖原来的python链接
1: [root@wangyuelou Python-2.7.2]# mv /usr/bin/python /usr/bin/python_old
2: [root@wangyuelou Python-2.7.2]# ln -s /usr/local/python27/bin/python /usr/bin/
3: [root@wangyuelou Python-2.7.2]# python
4: Python 2.7.2 (default, Jul 14 2011, 00:20:14)
5: [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
6: Type "help", "copyright", "credits" or "license" for more information.
7: >>>
此处已经可以正常使用python2.7了
但是因为yum是使用的2.4的版本来用的，所以 还需要修改一下
1: [root@wangyuelou ~]# yum
2: There was a problem importing one of the Python modules
3: required to run yum. The error leading to this problem was:
4:
5: No module named yum
6:
7: Please install a package which provides this module, or
8: verify that the module is installed correctly.
9:
10: It's possible that the above module doesn't match the
11: current version of Python, which is:
12: 2.7.2 (default, Jul 14 2011, 00:20:14)
13: [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)]
14:
15: If you cannot solve this problem yourself, please go to
16: the yum faq at:
18:
19:
20: [root@wangyuelou Python-2.7.2]# vim /usr/bin/yum
21:
22: #!/usr/bin/python #修改此处为2.4的位置
23: [root@wangyuelou ~]# vim /usr/bin/yum
24:
25: #!/usr/bin/python2.4
26: [root@wangyuelou ~]# yum
27: Loaded plugins: fastestmirror
28: You need to give some command
29: usage: yum [options] COMMAND
30:
31: List of Commands:
32:
33: check-update Check for available package updates
34: clean Remove cached data
35: deplist List a package's dependencies
36: downgrade downgrade a package
37: erase Remove a package or packages from your system
38: groupinfo Display details about a package group
39: groupinstall Install the packages in a group on your system
40: grouplist List available package groups
41: groupremove Remove the packages in a group from your system
42: help Display a helpful usage message
43: info Display details about a package or group of packages
44: install Install a package or packages on your system
45: list List a package or groups of packages
46: localinstall Install a local RPM
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