app.py

class Solution(object):
    def getShipCountInRow(self, row):
        ships = 0
        isShipContinuous = False
        for txt in row:
            if txt == u'X':
                isShipContinuous = True
            if isShipContinuous and txt == u'.':
                isShipContinuous = False
                ships += 1
        if isShipContinuous:
            ships += 1
        return ships

    def getContinueShipCount(self, row1, row2):
        result = []
        for index in range(len(row1)):
            if row1[index] == row2[index] == u'X':
                result.append(u'X')
            else:
                result.append(u'.')
        return self.getShipCountInRow(result)

    def countBattleships(self, board):
        """
        :type board: List[List[str]]
        :rtype: int
        """
        ships = self.getShipCountInRow(board[0])
        for index, row in enumerate(board[1:]):
            tempShips = self.getShipCountInRow(row)
            print(index, row, tempShips)
            previousRow = board[index]
            tempShips -= self.getContinueShipCount(row, previousRow)
            ships += tempShips
        return ships