How to change the default python path?

Question

I have a problem with changing python version,I'm using centos6 and i need to change the python version from 2.6 to 2.7.

[root@master Downloads]# which python
/usr/bin/python
[root@master Downloads]# which python2.7
/usr/local/bin/python2.7

How can i use python2.7 as default,or change the path of python to 2.7?

i can't install nltk with 2.7,i need to use 2.7 as default,but many system packages relies on 2.6. — deadendtux
– deadendtux, Commented Jun 22, 2013 at 3:55
if i used virtual env,i couldnt connect it with other projects,how can i install nltk module in python2.7 — deadendtux
– deadendtux, Commented Jun 22, 2013 at 3:57
The RPM system and a lot of other basic applications depends on the Python version shipped with the distro, your best shot is virtualenv. You can have virtualenvs based on 2.6 and 2.7 all along without conflicts, use the -p flag. — Paulo Scardine
– Paulo Scardine, Commented Jun 22, 2013 at 3:59

User · Accepted Answer · 2013-06-22 11:05:21Z

1

Now my system is like this:

$ ls -la /usr/bin/python
lrwxrwxrwx. 1 root root 7 Oct  1  2012 /usr/bin/python -> python2
$ ls -la /usr/bin/python2
lrwxrwxrwx. 1 root root 9 Oct  1  2012 /usr/bin/python2 -> python2.7
$ ls -la /usr/bin/python2.7
-rwxr-xr-x. 1 root root 10768 Jul 24  2012 /usr/bin/python2.7

You want to do this I think:

sudo rm /usr/bin/python
sudo ln -s /usr/bin/python2.7 /usr/bin/python

So that /usr/bin/python -> /usr/bin/python2.7

But I can not use yum and update my system as Klaus Warzecha pointed out.

answered Jun 22, 2013 at 11:05

User

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