# Battleship - 15/19

#1

``````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 "Let's play Battleship!"
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)

turn = 0
# Everything from here on should be in your for loop
# don't forget to properly indent!
for turn in range(4):
print (turn + 1)
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:
if turn == 3:
print "Game Over."
elif guess_row not in range(5) or guess_col not in range(5):
print "Oops, that's not even in the ocean."
elif board[guess_row][guess_col] == "X":
print "You guessed that one already."
else:
print "You missed my battleship!"
board[guess_row][guess_col] = "X"
print_board(board)
``````

#2

Does the message specify what the problem is with line 29?

#3

Traceback (most recent call last):
File “python”, line 29, in
ValueError: invalid literal for int() with base 10: ‘RUN’

#4

if you enter a value that can’t be converted to integer, `int()` will raise an error (as you can see)

enter a integer to guess a value on the board

#5

Oh I see. Thanks
There seems to be another issue: whenever i click run the board appears and it comes up with "Guess Row: " but I can never enter a value

#6

You may have accidentally entered a value that could not be converted to an `int`, such as an empty string. Just in case that was the problem, try running it again, and make sure you enter a digit in response to each of the two prompts.

#7

Yes, that would be a problem, and might be due to a bug. Refresh the page and try it again.

#8

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