What is “pypy3” Package?

Implementation of Python 3 in Python
For more details: https://pypy.org/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install pypy3.

  brew install pypy3

Now, use pypy3!