How to set priority?

Question

linux

There are 2 Pythons, one 2.7 the other 3. 2.7 is called by default.
Where to register (and what) to call the third one?

Answer 1

linuxconfig.org/how-to-change-from-default-to-alte...

Answer 2

pyenv will help. https://github.com/yyuu/pyenv