Programming Techniques

Which of the following statements are false about variable names:

• They must always be in capital letters
• They should be descriptive
• They should not start with numbers or contain spaces
• They point to memory locations

Which of the following is not a valid data type?

• Fraction
• Float
• String
• Integer

Quotation marks around a variable’s identifier imply that it is a:

• String
• Integer
• Character
• List

This variable data type can only have True or False values:

• Boolean
• Integer
• True/False
• String

The statement A OR B implies that A and B are:

• Booleans
• Integers
• Strings
• Constants

Casting refers to:

• Converting between variable data types
• Boolean algebra
• Printing out of the program’s results
• Sending values to a function or procedure

The programming keywords ELSE IF or ELIF are best used when our selection needs to work with:

• More than two choices
• More than three choices
• More than one choice
• A conditional loop

Identify the error in the pictured line of Python code
num1 * Num2 = total

• The variable assigned must be on the left
• Multiplication  symbol should be 'x' not '*'
• The variable Num2 can't have a capital letter
• 'total' needs to be casted as an integer

Which of the following lines of Python code will allow a user to input their username as a variable?

• user = input("Input your name: ")
• username == input("What is your username?")
• print("Input your username")
• input("Please enter your username") = userID

Which of these lines of Python code will output the third item from a list called 'games'?

• print(games[2])
• print games(3)
• print(games[3])
• print (games(2))