title: Problem with changing python statement with python3 in macOS Catalina
body: <p>By default when I type python in terminal it goes to python using the 2.7.x version. In oldest versions of macOS once I typed 'alias pyhton=python3' it changed forever and every time I typed python it goes to python version 3.
  But in macOS Catalina, I need to type the statement every time I open the terminal.
  Any suggestion?</p>