Question

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) - 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# Print (turn + 1) here!
    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 not in range(5) or guess_col not in range(5):
            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)
    if turn == 3:
        print "Game Over"

我对此代码有一些疑问：

当我在主板上输入一个数字（1，2，3等）时，它显示为2，3，{{ 1}}因此。我希望它从4计算，而不是从1计算;我该怎么做？
如果我点击 Enter ，则显示错误;我该怎么改变呢？
你能告诉我是否有错误，或者这个代码是否可以更轻松地完成？

Answer 1

1：board[guess_row][guess_col] = "X"应为board[guess_row-1][guess_col-1] = "X"。

2：见下文：

try:
    guess_row = int(raw_input("Guess Row:"))
    guess_col = int(raw_input("Guess Col:"))
except ValueError:
    print "Your gunners were asleep on the job!"
    if turn == 3:
        print "Game Over"
    continue

3：而不是：

board = []

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

使用列表理解：

board = [['O' for i in range(5)] for j in range(5)]

在Python 2中，通常最好使用xrange而不是range。在Python 3中使用range。

除此之外，您的代码非常好且简单明了。：）

以下是该计划的完整代码。我没有安装Python 2，所以我在Skulpt进行了测试，结果非常好。

from random import randint

board = [['O' for i in range(5)] for j in range(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) - 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# Print (turn + 1) here!
    try:
        guess_row = int(raw_input("Guess Row:"))
        guess_col = int(raw_input("Guess Col:"))
    except ValueError:
        print "Your gunners were asleep on the job!"
        if turn == 3:
            print "Game Over"
        continue
    if guess_row == ship_row and guess_col == ship_col:
        print "Congratulations! You sunk my battleship!"
        break
    else:
        if guess_row not in range(5) or guess_col not in range(5):
            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-1][guess_col-1] = "X"
            print_board(board)
    if turn == 3:
        print "Game Over"

Codecademy 18/19战舰

1 个答案: