CFU 2.1 - Karel Python CodeHS (mod 1-5)

What’s wrong with this code?

• The go function is called twice.

• The go function has a syntax error.

• The go function has been defined twice.

• Go is not a command that Karel understands.

Why does a programmer indent their code?

• Helps show the structure of the code.

• Easier for other people to understand.

• In Python, it is used to help determine what parts of a code are included in a code block, such as an if statement or for loop.

• All of the above.

How can we teach Karel new commands?

• Using Top-Down Design

• Typing the commands over and over

• Define a new function

• Call a function

Karel starts at Street 1, Avenue 1, facing East in a 5x5 world. What will happen after this code runs?

• Karel will end on Street 1, Avenue 2.

• Karel will end on Street 1, Avenue 7.

• This code won’t run because of a syntax error.

• Karel will crash into a wall.

What is top-down design?

• Top-down design is a way of designing your program by starting with the biggest problem and breaking it down into smaller and smaller pieces that are easier to solve.

• Top-down design is a way that you can create designs on a computer to put on a web page.

• Top-down design is a way of designing your programs starting with the individual commands first.

• Top-down design is a way to use loops and if statements to decompose the problem.

Which of the following commands is a valid Karel command?

• move

• move;

• move()

• move();

What makes the following command an invalid Karel command?

• It should end in semicolon

• The L should be a lower l

• It should start with a capital T

• This command is correct

Which of the following is the correct way to define a turn_right function in Karel?

• def turn_right(): turn_left() turn_left() turn_left()

• def turn_right(): turn_right() turn_right() turn_right()

• def turn right:

  turn_left()

  turn_left()

  turn_left()

• turn_right():

  turn_left()

  turn_left()

  turn_left()

Why do we use functions in Karel programs?

• Break down our program into smaller parts

• Avoid repeating code

• Make our program more readable

• All of the above

If Karel starts at Street 1 and Avenue 1, facing East, where will Karel be, and what direction will Karel be facing after running the following code? (Assume the world is 10x10 in size)

• Street 3, Avenue 1, Facing North

• Street 1, Avenue 4, Facing North

• Street 1, Avenue 3, Facing South

• Street 1, Avenue 3, Facing North