Problem with compiler for keyboard input (Battleship game)

For this code below, I keep getting keyboard input type error :
"Traceback (most recent call last):
File “python”, line 29, in
ValueError: invalid literal for int() with base 10: ‘SCT’ "

Tried flushing the keyboard buffer by using sys.stdout.flush() in sys library
Did not work
Any suggestions ?

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)
print ship_row
print ship_col

Everything from here on should be in your for loop

don’t forget to properly indent!

for turn in range(4):
print “Turn”, 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 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”
if turn == 3:
print “Game Over”
print_board(board)