Linux 将默认 Python 版本从 2.4 更改为 2.6
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Change default Python version from 2.4 to 2.6
提问by Kristopher Ives
I'm wanting to use some newer software that requires Python 2.6, and we currently have both 2.4and 2.6installed on our dedicated CentOS server, which looks like this:
我想使用一些需要 Python 的较新软件，2.6我们目前在专用 CentOS 服务器上安装2.4并2.6安装了这两个软件，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 2.6as the default python?
如何将其切换为开始使用2.6作为默认值python？
采纳答案by unutbu
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).
这将创建一个来自 /usr/local/bin/python --> /usr/bin/python2.6 的符号链接（替换旧的硬链接）。
回答by C Walker
rm /usr/local/bin/python
ln -s /usr/local/bin/python2.6 /usr/local/bin/python
rm /usr/local/bin/python
ln -s /usr/local/bin/python2.6 /usr/local/bin/python
回答by Jian
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，您也可以在 bash shell 的启动文件中为命令“python”添加一个别名。
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"
在编辑器中添加：别名“python”“python2.6”
and restart the shell.
并重新启动外壳。
回答by gezgingun
I had similar problem when using meld, I simply renamed the one under local and it worked. Not a good solution I know, but I can always take it back.
我在使用 meld 时遇到了类似的问题，我只是在 local 下重命名了一个并且它起作用了。我知道这不是一个好的解决方案，但我总是可以收回它。
sudo mv /usr/local/bin/python /usr/local/bin/re_python
回答by Linux user
Add an aliasfor the command "python" in the your bash shell's startup file. DON'Tchange a symbolic link from /usr/bin/python, because changing the default Python (in Ubuntu or Linux Mint for example) may break your system
在 bash shell 的启动文件中为命令“python”添加别名。 不要更改 /usr/bin/python 中的符号链接，因为更改默认 Python（例如在 Ubuntu 或 Linux Mint 中）可能会破坏您的系统
P.S.: read other answers
PS：阅读其他答案
回答by Slipstream
In CentOS
在 CentOS 中
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，请执行以下操作：
python -V
Then to fix yum "No module named yum", you should do:
然后要修复 yum “No module named yum”，您应该执行以下操作：
vi `which yum`
and modify #!/usr/bin/pythonto #!/usr/bin/python2.4
并将#!/usr/bin/python修改为#!/usr/bin/python2.4
