CodeHS Python Unit 3 Review

Which Python code segment will display “Hello, world!” on the screen?

• "Hello, world!"

• print "Hello, world!"

• print("Hello, world!")

• display Hello, world!

What does the following Python code display?

print("Hello")

print("World")

• HelloWorld

• Hello

  World

• Hello World

• "Hello"

  "World"

What type is the following variable?

x = "Hi there"

• boolean

• integer

• float

• string

What does the following Python program print?

x = "I am"

y = 6

z = "feet tall"

print(x)

print(y)

print(z)

• I am6feet tall

• I am 6 feet tall

• I am

  6

  feet tall

• x

  y

  z

What is the type of the variable x in the following Python program?

x = input("Enter a number from 1-10: ")

• integer

• float

• string

• The type cannot be determined

What does the following Python program print?

x = 9 + 6 / 3 * 2 - 1

print(x)

• 12

• 9

• 14

• 20

Which of the following operators is used for exponentiation (exponents) in Python?

• ^

• (( ))

• **

• %

What does the following Python program print?

x = 12 % 4

print(x)

• 3

• 0

• 3R0

• 36

Which of the following Python programs will NOT run?

• x = 4

  print(x + 5)

• x = 4

  y = 5

  print(x + y)

• x = 4

  y = 5.5

  print(x + y)

• x = 4

  y = "hi"

  print(x + y)

Which of the following best describes the main purpose of comments?

• Comments warn the people running the program about potential problems with the program.

• Comments create better spacing in programs.

• Comments describe your program so other people can read it more easily.

• Comments allow you to test just the portion of the code written in a comment before testing the whole program.