Python Interpreter: Shell/REPL

Python is an interpreter language. It means it executes the code line by line. Python provides a Python Shell, which is used to execute a single Python command and display the result.

It is also known as REPL (Read, Evaluate, Print, Loop), where it reads the command, evaluates the command, prints the result, and loop it back to read the command again.

To run the Python Shell, open the command prompt or power shell on Windows and terminal window on mac, write python and press enter. A Python Prompt comprising of three greater-than symbols >>> appears, as shown below.