Which of the following identifiers is valid?

Always use spaces in your source code file names when coding in Python.

An error that could be caused by the end user (e.g., not following instructions) is called:

Which code example is an expression?

Objects like integers and strings that can’t be modified are called _____ .

Space, tab, and newline are all called _____ characters.

The built-in Python function that gives an object’s identity is:

From the command line you use _____ to navigate within the file system.

Create a simple program that displays your major. Create a function named main that is invoked within the same program. No comments are needed. No input or processing is required.  Simply display your major as a string literal.

As a government official, Nolan wants fewer people to smoke. He has decided to use taxes to discourage people from smoking. How would he describe his decision to an economist?