not working | Python Fiddle

board = [0,1,2,3,4,5,6,7,8]
def show():
	print board[0],'|',board[1],'|',board[2]
	print '----------'
	print board[3],'|',board[4],'|',board[5]
	print '----------'
	print board[6],'|',board[7],'|',board[8]
	
def checkLine(char,spot1,spot2,spot3):
	if board[spot1] == char and board[spot2] == char and board[spot3] == char:
		return True

def checkAll(char):
	if checkLine(char,0,1,2) == true or checkLine(char,3,4,5) == true or checkLine(char,6,7,8) == true or checkLine(char,0,3,6) == true or checkLine(char,1,4,7) == true or checkLine(char,2,5,8) == true or checkLine(char,0,4,8) == true or checkLine(char,2,4,6) == true:
			return True
		
while True:
    input = raw_input("Select a spot: ")
    input = int(input)
    
    if board[input] != 'x' and board [input] != 'o':
        board[input] = 'x'
           
        if checkAll(x) == True:
            print "~~ X wins ~~"
            break;
	counter = 0 
    	while True:
        		
            opponent = counter
           
            if board[opponent] != 'o' and board[opponent] != 'x':
            	board[opponent]='o'
            	    
                if checkAll(o) == True:
                    print"~~ O wins ~~"
                    break;
       		break;
		counter = counter+1
    else:
            print 'This spot is taken!'
    show()

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