from random import randint #用來產生隨機數

board = []

for x in range(5):

board.append(["O"] * 5) # ['O'] * 5 即['O','O','O','O','O'] ，對board列表append5次這個O列表，執行完之后board就變成了一個5x5的列表

def print_board(board):

for row in board:

print " ".join(row) #the .join method uses the string to combine the items in the list. 打印出來效果就是O O O O O

print "Let's play Battleship!"

print_board(board)

def random_row(board):

return randint(0, len(board) - 1) #含頭尾

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 go in your for loop!

# Be sure to indent four spaces!

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 sunk my battleship!" #猜對的話打印，然后break，停止guess

break

else:

print turn + 1 #如果猜錯，統計錯誤的次數，滿4次則gameover

if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4): #超出范圍

print "Oops, that's not even in the ocean."

elif(board[guess_row][guess_col] == "X"):

print "You guessed that one already." #如果該位置已經是"X"，則表明已經猜過，提示you guessed that one already

else:

print "You missed my battleship!" #沒有超出范圍，則將所猜的位置變為"X"

board[guess_row][guess_col] = "X"

if (turn == 3):

print "Game Over" #錯誤滿4次

print_board(board) #每輪循環結束之后都打印一下board，更新一下值為"X"的位置

總結

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