The interactive interpreter

The interactive interpreter displays a prompt $(">>>")$ that indicates the interpreter is ready to accept code. The user types a line of Python code and presses the enter key to execute the code. Initially, you may think of the interactive interpreter as a powerful calculator. The example program below calculates a salary based on a given hourly wage, the number of hours worked per week, and the number of weeks per year. The specifics of the code are described elsewhere in the chapter.