Foun.CompSci_Final Exam review - Fall

COMPSCI_Final Exam review - Fall

by Kathleen Ma

Multiple Choice

After this code executes, what is the value of the variable name?

name = input("What is your name? ")

name = "William Shatner"

• What is your name?

• William Shatner

• Name

• Whatever the user inputs

Multiple Choice

if color == "green":

print("Sounds good! We'll make the car green!")

elif color == "yellow":

print("Sounds good! We'll make the car yellow!")

else:

print("Sounds good! We'll make the car gray by default!")

• comparitor

• conditional

• switch-route

• boolean

Multiple Choice

A statement is...

• A line of code that performs some action

• A line of code that ends with a period

• A line of code that begins with a # mark

• A way to make your code more fashionable

Multiple Choice

x = 0

y = 1

if x == y:

x = 1

else:

x = 0

• 1

• Syntax Error

• 01

• 0

Multiple Choice

What does the print( ) command do?

• It causes text output to appear in the console

• It gets text input from the user

• It turns on the printer

• It adds the symbols ( ) to the end of a line

Multiple Choice

x = 0

y = 10

if x < y:

x = y

• 10

• 100

• 0

• Logic Error

Multiple Choice

int( ) is an example of what type of command?

• Concatenation ("catting")

• Output

• Typecast

• Interior

Multiple Choice

What is a variable?

• A type of string literal

• A container that holds information

• The place where output appears

• The difference between two values

Multiple Choice

In the following line of code, ID the string literal. (There is only one.)

superhero = "Captain America"

print(superhero)

• superhero

• print

• Captain America

• "Captain America"

Multiple Choice

Which of the following is NOT true about conditions?

• They are boolean expressions

• They always produce the value True or False

• You can only have one condition per conditional

• They come between the keyword and colon in a conditional clause

Multiple Choice

Which of the following data types can be assigned to variables?

• String

• Integer

• Float

• All of these

• None of these

Multiple Choice

In the code below, what line of code that is not part of the conditional.

• elif choice == "winter":

• if choice == "summer":

• location = "outside"

• temp = 60

Multiple Choice

What is the data type of the value 11.46?

• String

• Integer

• Float

• Increment

Multiple Choice

What value is in the variable y after this code runs?

• 10

• 100

• 5

• 1000

Multiple Choice

Given the following code, if the user enters 25 as input, what is the final output?

var = input("Please enter a value: ")

total = int(var) + 15

print(total)

• 25

• 15

• 10

• 40

Multiple Choice

What symbol is used in Python to divide with no remainder? (floor division operator)

• //

• **

• %%

• ++

Multiple Choice

What command creates text output in Python?

• input("What is your name? ")

• name = input("What is your name? ")

• print(name)

• int(name)

Multiple Choice

How do you put an if-statement inside another if-statement (nesting)?

• Surround the inner conditional with ( ) symbols

• Use two conditions in a row in the second clause

• Use two `if` keywords in a row in the second clause

• Indent the second conditional underneath the first one

Multiple Choice

What type conversion (typecasting) should be used for the input below?

pets = input("Enter the number of pets you have: ")

• str(pets)

• float(pets)

• int(pets)

• num(pets)

Multiple Choice

The % symbol or modulo operator is used to...

• Raise a number to a power

• Get the square root of a number

• Get the remainder after division

• Get whole number division by throwing away the remainder

Multiple Choice

What type conversion (typecast) should be used for the variable total in line 2 below?

pets = 2 + 2

print("The total is: " + pets)

• str(pets)

• float(pets)

• int(pets)

• num(pets)

Multiple Choice

Which of the following chained comparison ranges includes the number 16?

• 10 < x < 16

• 10 < x < 20

• 16 < x < 20

• All of the above

Multiple Choice

Given the following code, choose the output that would appear in the console.

food1 = "Chicken "

food2 = "Soup"

print(var1 + var2)

• Chicken Soup

• Chicken

• Soup

• "Chicken Soup"

Multiple Choice

What library is needed in order to use the square root (sqrt) function?

• math

• randint

• random

• square

Multiple Choice

Given the following code, choose the output that would appear in the console.

num = "Eleven"

num = "Twelve"

print(num)

• "Eleven"

• Twelve

• Eleven

• "Twelve"

Multiple Choice

What library is needed in order to get random numbers?

• math

• randint

• random

• number_generator

Multiple Choice

Given the following code, choose the output that would appear in the console.

var = "Yo, "

var += "Adrian!"

print(var)

• Yo,

• Adrian!

• "Yo, Adrian!"

• Yo, Adrian!

Multiple Choice

Identify the literals in the following code. (There are 2.)

design = "^%^" + var + " #@#"

• "^%^"

• " #@#"

• Both

• Neither

Multiple Choice

Documentation on a built-in library such as math or random will tell us...

• What functions are in the library

• What arguments a library function needs

• What a library function does

• All of the above

Multiple Choice

Change line 2 of this code so that the dog's name is printed after the word Here (on the same line).

dog = input("Enter your dog's name: ")

print("Here, ")

• print("Here, " dog)

• print("Here, " + dog)

• print("Here, dog")

• print("Here, " + "dog")

Multiple Choice

In coding, AI is usually short for...

• All Incidents

• Added Investigation

• Artificial Intelligence

• Artificial Interrogation

Multiple Choice

Correct the syntax error in the code below so it prints Buy a yearbook.

print "Buy a yearbook."

• print("Buy a yearbook.")

• print + "Buy a yearbook."

• print = (Buy a yearbook.")

• print(Buy a yearbook.)

Multiple Choice

Which of the following is NOT a logical operator?

• and

• or

• not

• equal

Multiple Choice

Choose the expression that best represents the sentence: "I plan to go out to the park if the weather is nice and there is no baseball or soccer practice going on."

• good_weather and baseball and soccer

• good_weather or (baseball and soccer)

• not (good_weather or baseball or soccer)

• good_weather and not baseball or soccer

Multiple Choice

Add a str() typecast to the code below to prevent an error.

num = 42

print("The number is: " + num)

• prin(str("The number is: " + num))

• print("The number is: " + str("num"))

• print("The number is: " + str(num)

• print("The number is: " + str(num))

Multiple Choice

Add an operator to the code below to prevent an error.

var input("Enter a value: ")

print(var)

​

• var=input("Enter a value: ")

• var = input("Enter a value: ")

• var + input("Enter a value: ")

• var-input("Enter a value: ")

Multiple Choice

Which of the following is NOT a useful quality of error messages?

• They let us know the computer didn't understand something

• They force a program to run until the end, instead of quitting early

• They give a hint about where the error is

• They give a hint about what the error is

Multiple Choice

Why are variables useful?

• Unknown values can be stored in them

• The same value can be used in multiple places

• Complicated calculations can be broken into pieces

• All of these

Multiple Choice

Rewrite this line of code to use the increment operator.

num = num + 10

• num = num += 10

• num = num =+ 10

• num = num -= 10

• num = num =- 10

Multiple Choice

What symbol is used for the assignment operator?

• +

• -

• =

• *

Multiple Choice

In the code below, which uses the concatenation (catting) operator and NOT the addition operator.

money = input("How much is your phone worth? ")

value = 100 + int(money)

print("Your phone is now worth $" + str(value))

• value = 100 + int(money)

• print("Your phone is now worth $" + str(value))

Multiple Choice

What is the final value stored in num?

num = "18" + "18"

• 36

• "36"

• 1818

• There's not enough information to be sure

Multiple Choice

Which of the following is an expression, but not a statement?

(Hint: Expressions produce values, statements DO something.)

• 50 + 50

• x = 50

• x += 50

• print("50")

Multiple Choice

What value is the result of this expression?

55 % 5

• 11

• 5

• 275

• 60

Multiple Choice

Which line would be ignored by the computer?

"""

Code Stuff

"""

# Code Stuff

• Both

• Neither

• """

  Code Stuff

  """

• # Code Stuff

Multiple Choice

What data type is the result of the following expression?

11 / 3

• String

• Integer

• Float

• Input

Multiple Choice

What data type is the result of the following expression?

input("What is your favorite animal? ")

• String

• Integer

• Float

• Input