函数range： 一个参数：range(n) 从第0位开始数n个位 两个参数：range(m,n) 从第m位开始到第n-1位，递增间隔为1 三个参数：range(m,n,i) 从第m位开始到第n-1位，递增间隔为i for item in list: 和 for i in range(len(list)): 等价
对list中的元素用separator作为间隔输出： print separator.join(list) 如： list = ['a','b','c','d'] 一般的print list会输出： ['a','b','c','d']。 而 print " ".join(list) 会输出：a b c d(必须是双的双引号，单的双引号不起作用)
from random import randint def creat_board(length): board = [] for i in range(length): board.append(['O'] * length) return board def print_board(x): for row in x: print " ".join(row) def random_row(board): return randint(0, len(board) - 1)
length = int(raw_input("Enter board's length you:")) board = creat_board(length) print_board(board) turns = int(raw_input("Enter turns you want to play:")) for turn in range(turns): ship_row = random_row(board) ship_col = random_col(board) print "This is " + str(turn + 1) + "th time to guess:" guess_row = int(raw_input("Enter the row you guess:")) guess_col = int(raw_input("Enter the col you guess:"))
if guess_row == ship_row and guess_col == ship_col: print "You win!" break else: if (guess_row < 0 or guess_row > len(board) - 1) or (guess_col < 0 or guess_col > len(board) - 1): print "Incorrect input!" if turn == turns - 1: print "Turns out!" elif board[guess_row][guess_col] == 'X': print "You have guessed it already!" if turn == turns - 1: print "Turns out!" else: print "You guess wrong!" board[guess_row][guess_col] = 'X' print_board(board) if turn == turns - 1: print "Turns out!"
曾经犯的错误： 1.创建board函数忘记返回一个board，所以它一直为空，导致后面的操作都越界了； 2.生成随机位置的时候，位置row和col的命名一直是跟生成的函数名一样（random_row=random_row(board)），导致TypeError: 'int' object is not callable错误。
