Here is my code, I think it is right, but it report the error as: "Oops, try again. Your code threw the following error: invalid literal for int() with base 10: ''
Also showed: "Traceback (most recent call last):
File "python", line 21, in
ValueError: invalid literal for int() with base 10: ''
I really puzzled, can you help me?
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) 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) guess_row= int(raw_input( 'Guess Row: ')) guess_col= int(raw_input( 'Guess Col: '))# Add your code below!