Why is this wrong?


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[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:
board[guess_row][guess_col] == "X"
print "Congratulations! You sank my battleship!"
elif guess_row not in range(len(board)-1) or guess_col not in range(len(board)-1):
print "Oops, that's not even in the ocean."
elif board[guess_row][guess_col] == "X":
print "You guessed that one already!"
board[guess_row][guess_col] == "X"
print "You missed my battleship!"


probably because

the == is a boolean(comparative) operator but not an assignment operator the = is use to assign values to a variable. SO when you say

 board[guess_row][guess_col] == "X"

it should rather be

board[guess_row][guess_col] = "X"

ie(outside the conditional statements)