Question

我需要发表一个休息声明，代码的说明说：你的休息时间应该在你的＆＃34;祝贺之后进入你的if语句！＆＃34;消息。

from random import randint

board = []

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

def print_board(board):
    for row in board:
        print " ".join(row)

print "Let's play Battleship!"
print_board(board)

def random_row(board):
    return randint(0, len(board) - 1)

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

guess_row = int(raw_input("Guess Row:"))
guess_col = int(raw_input("Guess Col:"))

if guess_row == ship_row and guess_col == ship_col:
        break
print "Congratulations! You sunk my battleship!"
#I want to put my break satement here, but how?
    else:
    if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4):
        print "Oops, that's not even in the ocean."

    elif(board[guess_row][guess_col] == "X"):
        print "You guessed that one already."
    else:
        print "You missed my battleship!"
        board[guess_row][guess_col] = "X"
    # Print (turn + 1) here!
    print_board(board)
    if turn ==0:
        print "Game Over"

Answer 1

你需要一个while循环并将变量设置为一个值，如果错过了战舰，则将其减少1。

turn = 5 #set turn 
while True:
    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!" # print before you break
        break

    #I want to put my break statement here, but how?
    else:
        if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4):
            print "Oops, that's not even in the ocean."

        elif(board[guess_row][guess_col] == "X"):
            print "You guessed that one already."
        else:
            print "You missed my battleship!"
            turn-=1  # decrease turn if player misses
            board[guess_row][guess_col] = "X"
    # Print (turn + 1) here!
        print_board(board)
        if turn ==0:
            print "Game Over"
            break

请记住，如果用户输入非int值，程序将崩溃。

Answer 2

break语句在您的代码中的任何位置都没有意义。 break仅允许在循环内部（它突破）。你当前没有循环，尽管你应该这样做。

尝试使用while True（永远循环直到你break出来）：

#board setup and function definitions omitted

print "Let's play Battleship!"
print_board(board)
ship_row = random_row(board)
ship_col = random_col(board)
print ship_row
print ship_col

while True:
    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!"
        break
    else:
        if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4):
            print "Oops, that's not even in the ocean."
        elif(board[guess_row][guess_col] == "X"):
            print "You guessed that one already."
        else:
            print "You missed my battleship!"
            board[guess_row][guess_col] = "X"
        print_board(board)

我在哪里正确地将这个break语句放在Python中？

2 个答案: