Python無效的語法......？

我試圖學習Python和Codecademy一直很好的幫助。在他們的課程之一中，我製作了一個簡化的戰列艦遊戲。現在我試圖通過添加第二條船來擴展它，但是它在「while」函數的「其他」附近給我一個「無效的語法」錯誤。「while」功能的全部含義是在船上找到尚未被原船採用的第二艘船的位置。所有幫助表示讚賞！Python無效的語法......？

from random import randint 

#Defines the board 
board = [] 
for x in range(5): 
    board.append(["O"] * 5) 

#How it should print the board 
def print_board(board): 
    for row in board: 
     print (" ".join(row)) 

print ("Let's play Battleship!") 
for turn in range(1): 
    print ("TURN ", turn + 1) 
    break 
print_board(board) 

#Spawns the boat on a random location on the board 
def random_row1(board): 
    return randint(0, len(board) - 1) 
def random_col1(board): 
    return randint(0, len(board[0]) - 1) 
ship1_row = random_row1(board) 
ship1_col = random_col1(board) 

#Spawns the 2nd boat 
def random_row2(board): 
    return randint(0, len(board) - 1) 
def random_col2(board): 
    return randint(0, len(board[0]) - 1) 
ship2_row = random_row2(board) 
ship2_col = random_col2(board) 

#Finds a new location for the 2nd boat if it is already taken by the 1st 
#boat. It procceds with the game when an untapped location has been found. 
while ship1_row == ship2_row and ship1_col == ship2_col: 
    ship2_row = randint(0, len(board) - 1) 
    ship2_col = randint(0, len(board[0] - 1) 
else: 
    #Debugging 
    print ("Ship 1 row: ", ship1_row) 
    print ("Ship 1 col: ", ship1_col) 
    print (" ") 
    print ("Ship 2 row: ", ship2_row) 
    print ("Ship 2 col: ", ship2_col) 

    for turn in range(4): 

     realturn = turn + 1 
     guess_row = int(input("Guess row: ")) 
     guess_col = int(input("Guess colum: ")) 

     if guess_row == ship_row and guess_col == ship_col: 
      print ("CONGRATULATIONS! You sunk the battleship!") 
      break 
     else: 
      if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4): 
       print ("Oops, that location isn't even in the ocean!") 
      elif(board[guess_row][guess_col] == "X"): 
       print ("You guessed that location already!") 
      else: 
       print ("You missed the battleship!") 
       board[guess_row][guess_col] = "X" 

      if turn == 3: 
       print ("GAME OVER!") 
       break 

      print (" ") 
      print ("TURN ", realturn + 1) 
      print_board(board)

來源

2016-11-19 Zemah

你缺少一個括號：'randint（0，LEN（板[ 0] - 1））' – Keiwan

給出行號，而不是僅僅在「while」函數的「else」周圍說* * * – smci

您有前一行上不對稱的括號：

ship2_col = randint(0, len(board[0] - 1) 
        ^open ^open  ^close

（二開口和一個封閉。）

來源

2016-11-19 16:52:16 NPE

Python無效的語法......？

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