A.4 Verifying the installation

Once you’ve gone through the installation process, open a terminal (the Terminal app on macOS). From anywhere, try running the python command (or python3, potentially). If Python is installed successfully, you should be greeted with the Python REPL prompt, which should say Python 3 somewhere:

$ python3
Python 3.7.3 (default, Jun 17 2019, 14:09:05)
[Clang 10.0.1 (clang-1001.0.46.4)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

Try typing your favorite code snippet and see what happens:

>>> print('Hello, world!')
Hello, world!

Now you’re ready for world domination!