if data is greater than third large number and not equal to first & second update the third highest list
INDENT elif ( root . data > third [ 0 ] and root . data != first [ 0 ] and root . data != second [ 0 ] ) : NEW_LINE INDENT third [ 0 ] = root . data NEW_LINE DEDENT threelargest ( root . left , first , second , third ) NEW_LINE threelargest ( root . right , first , second , third ) NEW_LINE DEDENT