Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 52

Python
1

Tell us what’s happening:

My print command is not passing. Incorrect format.

I deleted rods, created the variables, and changed the arguments. The function works as it’s supposed to but the print command format is incorrect. I’ve tried many different permutations. I’d love some help :slight_smile:

My print command is:
print(f"A: {A}, B: {B}, C: {C}\n")

The prompt says “You should modify your print() call to print A, B, C, instead of the rods (dictionary) object. Keep the newline character at the end of the print() command.”

In an earlier version, I still had source, auxiliary, and target as the arguments and variables within the function, but I’ve been trying everything I can possibly think of that might fix the error. The other forum posts were helpful but I was not successful in correcting my code.

Your code so far


# User Editable Region

NUMBER_OF_DISKS = 4
A = list(range(NUMBER_OF_DISKS, 0, -1))
B = []
C = []

def move(n, A, B, C):
    if n > 0:
        # move n - 1 disks from A to B, so they are out of the way
        move(n - 1, A, C, B)
        
        # move the nth disk from A to C
        C.append(A.pop())
        
        # display our progress
        print(f"A: {A}, B: {B}, C: {C}\n")
        
        # move the n - 1 disks that we left on B onto C
        move(n - 1,  B, A, C)
              
# initiate call from A to C with B
move(NUMBER_OF_DISKS, A, B, C)

# User Editable Region

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Challenge Information:

Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 52

2

Welcome to the forum @jdt

You should modify your print() call to print A, B, C, instead of the rods object. Keep the newline character in the print() call.

You need to remove all strings.
If you are using quotes marks, then you have a string.

Happy coding

3

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