# What is wrong with code in "Danger, Will Robinson!"?

#1

When I get a miss on this excercise, it says: Traceback (most recent call last):
File "python", line 32, in
IndexError: list index out of range

I couldn't see any problems, and the issue is apparently on line 32, which is where the "board[guess_row], [guess_col] = "X" is.

``````from random import randint

board = []

for x in range(0, 5):
board.append(["O"] * 5)

def print_board(board):
for row in board:
print " ".join(row)

print_board(board)

def random_row(board):
return randint(0, len(board) - 1)

def random_col(board):
return randint(0, len(board[0]) - 1)

ship_row = random_row(board)
ship_col = random_col(board)
guess_row = int(raw_input("Guess Row:"))
guess_col = int(raw_input("Guess Col:"))

print ship_row
print ship_col

if guess_row == ship_row and guess_col == ship_col:
print "Congratulations! You sank my battleship!"
else:
print "You missed my battleship!"
board[guess_row][guess_col] = "X"

print_board(board)``````

if anyone can solve this, thanks in advance!

#2

Here is how it should look like:

``````from random import randint

board = []

for x in range(0, 5):
board.append(["O"] * 5)

def print_board(board):
for row in board:
print " ".join(row)

print_board(board)

def random_row(board):
return randint(0, len(board) - 1)

def random_col(board):
return randint(0, len(board[0]) - 1)

ship_row = random_row(board)
ship_col = random_col(board)
guess_row = int(raw_input("Guess Row:"))
guess_col = int(raw_input("Guess Col:"))

if guess_row == ship_row and guess_col == ship_col:
print "Congratulations! You sank my battleship!"

else:
print "You missed my battleship!"
board[guess_row][guess_col] = 'X'

print guess_row
print guess_col``````

You put `print ship_row` and `print ship_col`

It is suppose to be `print guess_row` and `print guess_col`

#3

Thanks candycornlover1! It worked.

-Gecko_po_2002

#4

No problem! Happy to help

#5

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