On Mon, 4 Jul 2016, qw wrote: >> Don't. If you try to swap out the standard python with another one, expect >> almost everything you hold dear to break. > > I want to build gstreamer sdk on centos by using cerbero, which is of python > program and demands python 2.7. How to make centos 6.8 choose python 2.7 by > default instead of python 2.6, so as to build gstreamer sdk? Personally I'd think of this in a much more SCL style than thinking about changing the default python. https://www.softwarecollections.org You don't need to make your whole system use a new python, just the new bits you're building that need it. jh