the value in spam is now when you added bacon and eggs you are adding their valueswhich are and respectively variables contain valuesnot expressions the spam variable was assigned value and not the expression bacon eggs after the spam bacon eggs assignment statementchanging bacon or eggs does not affect spam summary in this you learned the basics about writing python instructions python needs you to tell it exactly what to do in strict way computers don' have common sense and only understand specific instructions expressions are values (such as or combined with operators (such as or -python can evaluate expressionsthat isreduce the expression to single value you can store values inside of variables so that your program can remember them and use them later there are many other types of operators and values in python in the next you'll go over some more basic concepts and write your first program you'll learn about working with text in expressions python isn' limited to just numbersit' more than calculator