[英]Change default Python version from 2.4 to 2.6
I'm wanting to use some newer software that requires Python 2.6
, and we currently have both 2.4
and 2.6
installed on our dedicated CentOS server, which looks like this: 我想使用一些需要Python
2.6
新软件,我们目前在我们专用的CentOS服务器上安装了2.4
和2.6
,如下所示:
$ which python
/usr/local/bin/python
$ which python2.6
/usr/bin/python2.6
$ which python2.4
/usr/local/bin/python2.4
$ ls -l /usr/local/bin/py*
-rwxr-xr-x 1 root root 81 Aug 9 2007 /usr/local/bin/pydoc
-rwxr-xr-x 2 root root 3394082 Aug 9 2007 /usr/local/bin/python
-rwxr-xr-x 2 root root 3394082 Aug 9 2007 /usr/local/bin/python2.4
How can I switch it to start using 2.6
as the default python
? 如何将其切换为使用
2.6
作为默认python
?
As root: 作为根:
ln -sf /usr/bin/python2.6 /usr/local/bin/python
This will make a symbolic link from /usr/local/bin/python --> /usr/bin/python2.6 (replacing the old hardlink). 这将从/ usr / local / bin / python - > /usr/bin/python2.6(替换旧的硬链接)创建一个符号链接。
As an alternative, you can also just add an alias for the command "python" in the your bash shell's startup file. 作为替代方案,您还可以在bash shell的启动文件中为命令“python”添加别名。
so open the startup file: emacs ~/.bashrc 所以打开启动文件:emacs~ / .bashrc
in the editor u append: alias "python" "python2.6" 在编辑器中你附加:别名“python”“python2.6”
and restart the shell. 并重新启动shell。
rm /usr/local/bin/python
ln -s /usr/local/bin/python2.6 /usr/local/bin/python
Add an alias for the command "python" in the your bash shell's startup file. 在bash shell的启动文件中为命令“python” 添加别名 。 DON'T change a symbolic link from /usr/bin/python, because changing the default Python (in Ubuntu or Linux Mint for example) may break your system
不要从/ usr / bin / python更改符号链接,因为更改默认Python(例如在Ubuntu或Linux Mint中) 可能会破坏您的系统
PS: read other answers PS:阅读其他答案
In CentOS 在CentOS
ln -sf /usr/local/bin/python2.6 /usr/local/bin/python
ln -sf /usr/local/bin/python2.6 /usr/bin/python
To check version do: 要检查版本:
python -V
Then to fix yum "No module named yum", you should do: 然后要修复yum“没有名为yum的模块”,你应该这样做:
vi `which yum`
and modify #!/usr/bin/python to #!/usr/bin/python2.4 并将#!/ usr / bin / python修改为#!/ usr / bin / python2.4
I had similar problem when using meld, I simply renamed the one under local and it worked. 我在使用meld时遇到了类似的问题,我只是在本地重命名了它,它起作用了。 Not a good solution I know, but I can always take it back.
我知道这不是一个好的解决方案,但我总能把它拿回来。
sudo mv /usr/local/bin/python /usr/local/bin/re_python
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