Python 101 (Old)

1. What is the keyword used to start a function definition?

• function
• def
• create
• abracadabra

2. What is outputted by the following code?

i = 0
def inc() :
    i = i + 1
    print(i)
inc()

• 1
• 0
• Nothing, it will produce an error.
• Undefined

3. Why does the following code not print anything?

i = "hello world"
def print_hello_world() :
    print(i)

• The variable i does not contain the string "hello world."
• The function has not been called.
• You can not access a global variable inside a function.
• It will print "hello world."

4. What goes into the first parameter of the onkey function?

• a function's name
• a string of the key
• onkey does not take any parameters
• a number

5. Why does the following code not print "Hello" when the space bar is pressed?

def say() :
    print("Hello")

screen.onkey(say(), "Space")
screen.listen()

• screen.listen is not a function
• The first parameter of onkey shouldn't include parentheses
• The second parameter does not take a string
• "say" is a keyword

6. Why does the following code not print "Hello" when the space bar is pressed?

def say() :
    print("Hello")

screen.onkey(say, "Space")

• The first parameter of onkey is incorrect
• The second parameter of onkey does not take a string
• The screen.listen() function was not called
• screen.onkey is not a function

7. What is an advantage of using a function?

• It makes the code more modular and more readable.
• It makes you have less bugs.
• It makes code run faster.
• It has no advantages.

8. True or False : All user defined functions can't have parameters.

• True
• False

9. True or False : Function names must follow the same naming rules as variables.

• True
• False

10. What is wrong with the following code?

def set_i() :
    i = 10
set_i()
print(i)

• The code is correct.
• "set_i" is not a valid function name.
• "i" must be a string to use print.
• "i" is not defined in global scope.

11. How many seconds does it take for the screen to print out "Hello" after the following code is executed?

def print_hello_world() :
    print("Hello")
screen.ontimer(print_hello_world, 500)
screen.listen()

• 50 seconds
• 500 seconds
• 5 seconds
• .5 seconds