Traceback (most recent call last):
File "python", line 30, in
IndexError: list index out of range
The instructions tells us to use the "if guess_row not in range(5)........" but this will produce the above error if we introduce the coordinates 5,x or x,5, or any other value greater than 5.
2 things: either the range should be different or values equal or greater than 5 should not be allowed!
rom 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) - 1) ship_row = random_row(board) ship_col = random_col(board) print ship_row print ship_col guess_row = int(raw_input("Guess Row:")) guess_col = int(raw_input("Guess Col:")) # Write your code below! if guess_row == ship_row and guess_col == ship_col: print "Congratulations! You sank my battleship!!" elif board [guess_row][guess_col] == "X": print "You guessed that one already." else: if guess_row not in range(5) or guess_col not in range(5): print "Oops, that's not even in the ocean." else: print "You missed my battleship!" board [guess_row][guess_col] = "X" print_board(board)