pythonlist语法学习(带例子)

创建:list = [5,7,9]取值和改值:list[1] = list[1] * 5列表尾插入:list.append(4)去掉第0个值并返回第0个值的数值:list.pop(0)去掉第0个值但不返回数值:del(list[0])去掉具体某个值:list.remove(35)函数function:无参数:def function():一个参数:def function(x):2个参数:def function(y):任意个参数:def add_function(*args):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)接受键盘输入:guess_row = int(raw_input(“guess row:”))下面是一个自己写的小程序:生成一个方阵和随机的位置,叫玩家猜这个生成的位置是哪里

代码如下:

from random import randintdef creat_board(length): board = [] for i in range(length): board.append([‘o’] * length) return boarddef print_board(x): for row in x: print ” “.join(row)def random_row(board): return randint(0, len(board) – 1)def random_col(board): return randint(0,len(board[0]) – 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。