python list语法学习(带例子)
时间:2023-08-20 05:36:40
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
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)
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。
![](/images/zang.png)
![](/images/jiucuo.png)
猜你喜欢
python3+PyQt5+Qt Designer实现堆叠窗口部件
![](https://img.aspxhome.com/file/2023/6/93566_0s.png)
Go语言中利用http发起Get和Post请求的方法示例
![](https://img.aspxhome.com/file/2023/0/133980_0s.png)
开展全面的网站评估
centos 6.9安装mysql的详细教程
Python还能这么玩之只用30行代码从excel提取个人值班表
![](https://img.aspxhome.com/file/2023/7/133517_0s.png)
JavaScript实现简单计算器小功能
![](https://img.aspxhome.com/file/2023/6/135526_0s.jpg)
Python编程之多态用法实例详解
Python中Enum使用的几点注意事项
如何获得刚插入数据库的记录的ID号?
python 破解加密zip文件的密码
![](https://img.aspxhome.com/file/2023/1/105411_0s.png)
Python生成随机验证码的两种方法
python多进程读图提取特征存npy
Django小白教程之Django用户注册与登录
![](https://img.aspxhome.com/file/2023/1/95921_0s.png)
Python的Django框架中自定义模版标签的示例
SQL Server中的T-SQL的基本对象
Django项目之Elasticsearch搜索引擎的实例
.Net行为型设计模式之迭代器模式(Iterator)
![](https://img.aspxhome.com/file/2023/5/122815_0s.png)
如何使用共享连接减少空闲的连接数?
pandas DataFrame 赋值的注意事项说明(index)
浅谈Python3实现两个矩形的交并比(IoU)
![](https://img.aspxhome.com/file/2023/7/67247_0s.jpg)