PLTW Computer Science Semester 1 Final Exam Review Questions And Answers Graded A+

How are variables used in programming? - Answer-They are used as a storing location associated with an identifier What is a variable? - Answer-A named memory cell where information can be stored A function is a block of code. How many built-in functions does Python have? - Answer-80 Which part of the canopy screen would you use in order to type many lines of code before execution? - Answer-Code editor Which part of the canopy screen would you use to type code and get immediate results? - AnsweriPython Session Python uses the keyword def to define a new function a. True b. False - Answer-True The lines of code in a function are indented four (4) spaces a. True b. False - Answer-True To create multi-line comments (also called a docstring) you would use ________. - Answer-''' An advantage of destroying local variables once the block is done executing is to free up space a. True b. False - Answer-TrueCode that has already been written by other people are called modules, and they can be imported from ____________ of packages that come with Canopy. - Answer-Libraries To add comments in Python, use the ___________symbol - Answer-# True or False - Answer-boolean Any characters - Answer-string Integers - Answer-int Any real number - Answer-float The following input would result in what type of variable? In [ ] : 5*3 - Answer-int The following input would result in what type of variable? In [ ] : 6*8.1 - Answer-float To assign a variable to a value you must use the ________ . - Answer-= To divide numbers you must use the _______________ symbol . - Answer-/ To multipy numbers you must use the _______________ symbol . - Answer-* To get the exponential of a number you would use the ___________ symbol. - Answer-** What is the correct way to assign the value of 12 to the variable ounces? - Answer-ounces = 12In an if-structure, what gets executed depends on whether a Boolean expression, also known as a conditional is true a. True b. False - Answer-True In a Boolean expression, which operator is used to express that 5 is greater than 3 - Answer- Boolean expressions can also be connected conditionals. Which of the following is not used for connection expressions? a. plus b. and c. or d. not - Answer-plus What value would the following Boolean expression return (assuming a is 4), True or False? a + 3 5 - Answer-True What value would the following Boolean expression return (assuming a is 4), True or False? a**2=16 and a1 - Answer-False