Python--小程序

1.

# 如果同一个ip地址60s之内访问超过200次，那么就把ip加入黑名单
# 需求分析
# 1.60s读一次文件
# 2.分割，取第一个元素，ip地址
# 3.把所有ip加入到一个list里面，如果ip次数超过200次加入黑名单

import time

point = 0  # 文件指针
while True:
    blk_set = set()  # 定义空集合，存放需要加入黑名单的ip
    ips = []  # 存放所有ip地址
    with open('access.log') as f:
        f.seek(point)
        for line in f:
            ip = line.split()[0]
            ips.append(ip)
            if ips.count(ip) > 200:
                blk_set.add(ip)
        for ip in blk_set:  # 去重
            print('已把%s加入黑名单' % ip)
        point = f.tell()
        time.sleep(60)

2.判断是否为小数

# 小数点的个数，小数点的个数是否等于1
# 按照小数点分割


def check_float(s):
    s = str(s)
    if s.count('.') == 1:
        s_list = s.split('.')
        # 1.2 [1, 2]
        # -5.3 [-5, 4]
        left = s_list[0]
        right = s_list[1]
        if left.isdigit() and right.isdigit():  # 正小数
            return True
        elif left.startswith('-') and left.count('-') == 1:  # 负小数
            if left.split('-')[-1].isdigit() and right.isdigit():
                return True
    return False

3.对比字典内容

dict1 = {
    "version": "9.0.0",
    "is_test": True,
    "store": "",
    "urs": "",
    "device": {
        "os": "android",
        "ime1": "99001062198893",
        "device_id": "CQliMWEyYTEzNTYyYzk5MzJmCTJlNmY3Zjkx",
        "mac": "02:00:00:00:00:00",
        "galaxy_tag": "CQliMWEyYTEzNTYyYzk5MzJmCTJlNmY3Zjkx",
        "udid": "a34b1f67dd5797df93fdd8b072f1fb8110fd0db6",
        "network_status": "wifi"
    },
    "adunit": {
        "category": "VIDEO",
        "location": "1",
        "app": "7A16FBB6",
        "blacklist": ""
    },
    "ext_param": {
        "is_start": 0,
        "vId": "VW0BRMTEV"
    }
}

dict2 = {
    "version": "9.0.0",
    "is_test": True,
    "urs": "",
    "store": "",
    "device": {
        "os": "android",
        "imei": "99001062298893",
        "device_id": "CQliMWEyYTEzNTYyYzk5MzJmCTJlNmY3Zjkx",
        "mac": "02:00:00:00:00:00",
        "galaxy_tag": "CQliMWEyYTEzNTYyYzk5MzJmCTJlNmY3Zjkx",
        "udid": "a34b1f67dd5797da93fdd8b072f1fb8110fd0db6",
        "network_status": "wifi"
    },
    "adunit": {
        "category": "VIDEO",
        "location": "1",
        "app": "7A16FBB6",
        "blacklist": ""
    }, "ext_param": {
        "is_start": 0,
        "vid": "VW0BRMTEV"
    }
}


# http://www.nnzhp.cn/archives/433 第15题 提示：判断类型加递归
# 判断两个字典里面不一样的key，value
# 只需判断d1里面有
# 循环d1，通过key去d2里面取值
# 判断通过key取到的类型是什么，如果是字典的话，继续循环
# 然后再判断key和value

def compare(d1, d2):
    for key in d1:
        value1 = d1.get(key)
        value2 = d2.get(key, '不存在')
        if type(value1) == dict:
            compare(value1, value2)
        else:
            if value1 != value2 and value2 == '不存在':
                print('value不一样的key:%s，value1:%s，value2:%s' % (key, value1, value2))

    res = set(d1.keys()).symmetric_difference(set(d2.keys()))  # 对称差集，两个字典里面不一样的key
    if res:
        print('key不一样的是', ','.join(res))


compare(dict1, dict2)

4.商品管理小程序

# 作业2
# 写一个添加商品的程序
# 1.添加商品 商品名称/价格/数量/颜色 非空，价格校验，数量校验
# 2.查看商品
# 3.删除商品
# 5个函数 写文件一个 上面三个 判断价格


# 定义goods字典，存放商品信息
goods = {}


# 如果文件存在内容取文件内容。
def read_file(file_name):
    global goods
    with open(file_name, 'a+') as f:
        f.seek(0)
        if f.read():
            f.seek(0)
            goods = eval(f.read())
    return goods


# 查看商品函数
def list_goods():
    if goods:
        print('商品包括:')
        for key in goods:
            print(key)
            value = goods[key]
            for v in value:
                if v == '价格':
                    print('	价格:{}'.format(value[v]))
                elif v == '数量':
                    print('	数量:{}'.format(value[v]))
                elif v == '颜色':
                    print('	颜色:{}'.format(value[v]))
    else:
        print('商品库中暂无商品！^_^')


# 校验价格
def check_price(price):
    price = str(price).strip()
    if price.isdigit():
        return True
    elif price.count('.') == 1:
        s_list = price.split('.')
        left = s_list[0]
        right = s_list[1]
        if left.isdigit() and right.isdigit():  # 正小数
            return True
        else:
            return False
    return False


# 判断数量
def check_number(number):
    number = str(number).strip()

    if number.isdigit():
        if int(number) > 0:
            return True
        else:
            return False
    else:
        return False


# 添加商品
def add_goods(file_name):
    value = {}  # 为字典的value定义一个空字典，存放数据
    print('添加商品程序启动...')
    print('如果想退出此程序请输入quit，^_^')
    while True:
        goods_name = input('请输入商品名称:').strip()
        goods_price = input('请输入商品价格:').strip()
        goods_number = input('请输入商品数量:').strip()
        goods_colour = input('请输入商品颜色:').strip()
        if goods_name == 'quit':
            print('已退出添加商品！')
            break
        elif goods_name and check_price(goods_price) and check_number(goods_number) and goods_colour:
            if goods_name in goods:
                print('商品已存在！')
            else:
                value['价格'] = goods_price
                value['数量'] = goods_number
                value['颜色'] = goods_colour
                goods[goods_name] = value
                with open(file_name, 'w') as f_write:
                    f_write.write(str(goods))
                print('恭喜，添加商品%s成功！' % goods_name)
                break
        else:
            print('商品信息输入有误！')


# 删除商品
def remove_goods(file_name):
    print('删除商品程序启动...')
    while True:
        goods_name = input('请输入商品名称:').strip()
        if goods_name:
            if goods_name in goods:
                goods.pop(goods_name)
                with open(file_name, 'w') as f_write:
                    f_write.write(str(goods))
                print('%s已删除！' % goods_name)
                break
            else:
                print('商品不存在哦，^_^')
        else:
            print('商品名称不可为空哦，^_^')


# 操作程序
def os_main(file_name):
    read_file(file_name)
    print('欢迎进入商品管理系统，^_^
退出系统请输入:quit')
    print('1.查看商品 2.添加商品 3.删除商品')
    while True:
        choice = input('请输入您的选项:').strip()
        if choice.isdigit():
            if int(choice) == 1:
                list_goods()
            elif int(choice) == 2:
                add_goods(file_name)
            elif int(choice) == 3:
                remove_goods(file_name)
            else:
                print('输入有误！')
        else:
            if choice == 'quit':
                break
            else:
                print('输入有误！')


os_main('商品.txt')