Question

我正在研究代码学院战舰代码，我需要找到一种方法将其转换为python 3.2它在2.7中工作得很好，但在3.2中不起作用这是我到目前为止所做的：

import random

board = []

for x in range(0,5):
  board.append(["O"] * 5)

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

print_board(board)

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

def random_col(board):
    return random.randint(0,len(board[0])-1)

ship_row = random_row(board)
ship_col = random_col(board)
guess_row = input("Guess Row:")
guess_col = input("Guess Col:")

print ship_row
print ship_col

if (guess_row == ship_row and guess_col == ship_col):
    print ("Congratulations! You sank my battleship!")
else:
     if guess_row < 0 or guess_row >= len(board) or guess_col < 0 or guess_col >= len(board):

        print ("Oops, that’s not even in the ocean.")
    else:
        print ("You missed my battleship!")
        guess_row = ("X")
        guess_col = ("X")
        print_board(board)
    if board[guess_row][guess_col] == ("X"):
        print ("You guessed that one already.")

就像我说的那样，它适用于2.7但不适用于3.2 在3.2中，我收到打印ship_row的语法错误有什么想法吗？

Answer 1

Print语句被替换为3.x

中的print（）函数

Old: print "The answer is", 2*2
New: print("The answer is", 2*2)

Old: print x,           # Trailing comma suppresses newline
New: print(x, end=" ")  # Appends a space instead of a newline

Old: print              # Prints a newline
New: print()            # You must call the function!

Old: print >>sys.stderr, "fatal error"
New: print("fatal error", file=sys.stderr)

Old: print (x, y)       # prints repr((x, y))
New: print((x, y))      # Not the same as print(x, y)!

是文档的摘录。 http://docs.python.org/3.0/whatsnew/3.0.html

Answer 2

在python 3中，print语句已被print()函数替换。

新print(ship_row)

旧print ship_row

看到这个： What’s New In Python 3.0

将Code Academy Battleship Code转换为python 3.2

2 个答案: