Tracy not Karel Review Quiz

When the following for loop is complete, how many spaces will Tracy have moved?

for i in range(5):

forward(10)

• 50

• 60

• 10

• 5

Suppose you write a function. How many times can you call the function in your code?

• 1

• 0

• as many times as you want

• only the same number of times as commands in the function

In which of the following situations would it be best to make a function?

• You want Tracy to draw a blue line, and your program requires lots of blue lines.

• You need Tracy to move forward by 100.

• You need Tracy to turn right and then turn left.

• You need to change Tracy’s color.

Which of the following pieces of code will make Tracy do the following actions three times: go forward, change colors, and then turn around.

• 
• 
• 
• 

Which of the following functions would be the most useful?

• def draw_triangle( ):

• def draw_line( ):

• def draw_circle( );

• def move_100( );

Which of the following is NOT a command you can give to Tracy?

• left

• forward

• color

• turn

Which of the statements below is true about indentation in Python?

• Indentation only matters in for loops. Then, everything must be indented one level.

• Indentation never matters in Python. You can align your code any way you like, but indentation makes your code easier to read.

• Indentation always matters in Python. Every statement must be aligned correctly.

• Indentation only matters in functions. Then, everything must be indented one level.

Which of the following statements are true about for loops?

A. By default, the range function starts at 0
B. Using for i in range(4) will result in i taking the values 0, 1, 2, 3, 4
C. For loops let you repeat something any number of times
D. Statements in a for loop do not need to be indented
E. It is not possible to have the range values count 6, 12, 18, 24
F. It is not possible to have the range values count 1, 2, 4, 8, 16

• A, C, F

• A, C

• A, B, F

• B, C, E

Which of the following functions is defined correctly?

• 
• 
• 
• 

Which of the following is NOT a purpose of using functions?

• Functions let Tracy do new things.

• Functions help group statements together to make your code more readable.

• Functions let you execute code a fixed number of times.

• 
  

  Functions allow the programmer to reuse code.