python 小脚本

1.乘法口诀表

for i  in range(1,10):
    for j in range (1,i + 1):
        ji = i * j
        print("{}*{}={}".format(i,j,ji),end='\t')
    print()

2.11点游戏

'''
11点游戏
    大小王用14 15 表示
    自动生成牌 J-大王  0.5分  1-10按照牌面值
    3个玩家
    发牌
'''
import random

wang_list = ['("小王",14)','("大王"),15']
color_list = ["红桃",'黑桃','梅花','方片']
num_list = range(1,14)
poke_list = [(color,num) for color in color_list  for num in range(1,14)]
poke_list.extend(wang_list)

result = {}
# #洗牌 打乱list顺序
# random.shuffle(poke_list)

user_list = ['Jack','Jim','Lucy']
for user in user_list:
    score = 0
    idx = random.randint(0,len(poke_list) - 1)
    poker = poke_list.pop(idx)
    _,num = poker

if num > 10:
    score += 0.5
else:
    score += num

while True:
    choice = input("if go on ?(y/n):")
    choice = choice.upper()
    if choice not in {"Y","N"}:
        print("input error please try again")
        continue
    if choice == "N":
        result[user] = score
        break
    else:
        idx = random.randint(0, len(poke_list) - 1)
        poker = poke_list.pop(idx)
        _, num = poker
        if num > 10:
            score += 0.5
        else:
            score += num
        if score <= 11:
            continue

        score = 0
        result[user] = score
        print("爆了")
        break
print(result)

"""
根据要求实现资源下载器
1.启动后  让用户选择专区  每个专区用单独的函数实现，提供的专区如下：
    下载 花瓣网图片专区
    抖音短视频专区
    NBA锦集专区
2.在用户选择某个功能后 表示进入某个下载专区 在里面循环提示user 可以下载内容的选项 用户只要选择序号就可以下载指定的资源
3.在某个专区中，如果用户输入 Q/q 表示退出上一级，回到选择区
4.在选择区中输入Q/q 则退出整个程序
每个专区实现下载案例如下：

"""
import requests

def run():
    """启动程序"""
    func_dic = {
        "1":image,
        "2": nba,
        "3": video,
    }
    print("1.图片专区","2.NBA专区","3.短视频专区" )

    while True:
        choice = input("请选择：")

        func = func_dic.get(choice)
        print(func)
        if not func:
            continue
        func()

def image():
    """图片专区功能"""
    image_dic = {
        "1":("image1","https://huaban.com/pins/5042741077"),
        "2":("image2","https://huaban.com/pins/5077852312")
    }
    for k,v in image_dic.items():
        msg = "{}.{}".format(k,v[0])
        print(msg)

    choice = input("please choice:")
    title, url = image_dic[choice]
    file_name = "{}.jpg".format(title)
    _download(file_name,url)

def nba():
    """NBA function"""
    nba_dic = {
        "1":{"title":"闪电新闻推出解码“中国式现代化”系列短视频","url":"https://haokan.baidu.com/v?pd=wisenatural&vid=6566621781949319567"},
        "2":{"title":"钟表、花瓶 3D打印实现废物利用", "url": "https://haokan.baidu.com/v?vid=3071146304186853769&&"
             }
    }

    _video_nba(nba_dic)

    # for v, k in nba_dic.items():
    #     msg = "{}.{}".format(v,k['title'])
    #     print(msg)
    #
    # choice = input("please choice:")
    # info_dic = nba_dic[choice]
    # name = info_dic['title']
    # url = info_dic['url']
    # filename = "{}.mp4".format(name)
    # _download(filename, url)

def video():
    """Video function"""
    video_dic = {
        "1":{"title":"阿龙过来给尔普修水池，真诚朴实善良，邀请我到她家过年还相亲","url":"https://www.douyin.com/video/7164291628558077188"},
        "2":{"title":"曾经的我们也被人羡慕", "url": "https://www.douyin.com/video/7164357861185801480"
             }
    }
    _video_nba(video_dic)

    # for v, k in video_dic.items():
    #     msg = "{}.{}".format(v,k['title'])
    #     print(msg)
    #
    # choice = input("please choice:")
    # info_dic = video_dic[choice]
    # name = info_dic['title']
    # url = info_dic['url']
    # filename = "{}.mp4".format(name)
    # _download(filename, url)


def _download(filename,url):
    res = requests.get(url=url,headers={
        "user-agent":"Mozilla/5.0 (Windows NT 10.0;Win64; x64) AppleWebKit/537.36(KHTML, likeGecko) Chrome/103.0.0.0Safari/537.36" })
    print(res)
    with open(filename,mode='wb') as f:
        f.write(res.content)

def _video_nba(data_dict):
    for v, k in data_dict.items():
        msg = "{}.{}".format(v, k['title'])
        print(msg)

    choice = input("please choice:")
    info_dic = data_dict[choice]
    name = info_dic['title']
    url = info_dic['url']
    filename = "{}.mp4".format(name)
    _download(filename, url)

3.装饰器练习

"""计算一个函数的执行时间"""
import time

def coast(arg):
    def inner():
        start = time.time()
        res = arg()
        end = time.time()
        print(end - start)
        return res

    return inner
@coast
def func():
    data = 0
    for i in range(10000000000):
        data += i
    return data


func()

"""
在函数执行之前输出一个befroe
实现对原函数的返回值 + 100
"""

def before(arg):
    def inner():
        print("befroe")
        return arg()
    return inner

def update_return_value(arg):
    def inner():
        res = arg()
        res = res + 100
        return res
    return inner


@update_return_value
@before
def f1():
    return 123

t = f1()
print(t)

def repeat_func(arg):
    def inner():
        result = 0
        for i in range(5):
            res = arg()
            result += res

        return result
    return inner

@repeat_func
def f1():
    return 123

t = f1()
print(t)

关于装饰器的参数

def outer(args):
    def inner(a1,a2):
        return args(a1,a2)
    return inner

@outer
def plus(v1,v2):
    return  v1+v2

res = plus(1,3)
print(res)

def outer(args):
    def inner(a1):
        return args(a1)
    return inner

@outer
def plus(v1):
    return  v1

res = plus(1)
print(res)

def outer(func):
    def inner(*args,**kwargs):
        return func(*args,**kwargs)
    return inner

@outer
def plus(v1):
    return  v1

res = plus(1)
print(res)

"""
带参数的装饰器
"""
def tt(count):
    def outer(func):
        def inner(*args,**kwargs):
            r = 0
            for i in range(count):
                res = func(*args,**kwargs)
                r += res
            return r
        return inner
    return outer

@tt(5)
def f(x):
    return x

res = f(100)
print(res)

原文地址：http://www.cnblogs.com/W505020235/p/16876663.html