How to make python3 command run Python 3.6 instead of 3.5?

Question

I just downloaded Python 3.6.1, but when I type python3 -V in the terminal it\'s still Python 3.5.3. How can I make python3 point to

Answer 1

If you are looking for other than the accepted answer. Here is the solution that saved my life. This is to replace it with new version.

$ python3 --version
  Python 3.5.2

$ ls -lh /usr/bin/python3
  lrwxrwxrwx 1 root root 9 Mar 23  2016 /usr/bin/python3 -> python3.5

$ sudo mv /usr/bin/python3 /usr/bin/_python3
$ sudo cp /usr/bin/python3.6 /usr/bin/python3

$ python3 --version
  Python 3.6.11