python-2.7 - 如何恢复 make install 和使用 make altinstall

Question

我已经关注了这个tutorial另一方面用 python 3.4.4 覆盖 python2.7，它工作得很好。只有一件事是错误的。输入 python，仍然转到 python2.7，python3 转到 python3.4.4。所以从我学到的是

It is critical that you use make altinstall when you install your custom version of Python. If you use the normal make install you will end up with two different versions of Python in the filesystem both named python. This can lead to problems that are very hard to diagnose.

请帮我恢复。

Answer 1

浏览了这个博客 Install Python on Linux (Centos) .当然，我必须使用 sudo 命令重新运行 make altinstall。之后我试过了

`sudo ln -s /usr/local/bin/python3.4 /usr/local/bin/python`.

哪个有我

ln: creating symbolic link `/usr/local/bin/python': File exists

我必须删除路径 /usr/local/bin/python。然后再试一次。问题解决了