• python-查询账户余额,转账,提现功能(导包,装饰器)--


    import os
    import json
    import sys
    import hashlib
    import time as  t
    sys.path.append('..core') # 添加到sys.path中
    print(sys.path)
    import withdraw # 导入withdraw 虽然报错但是没关系这只是pycharm的问题
    """
    尝试把上一章的验证用户登陆的装饰器添加到提现和转账的功能上。
    """
    def login_youhua_hash(func):
        """
        登录装饰器,文件名:account_hash.json
        :return:
        """
    
        def login_decorator(*arg):
            count = 1
            m = hashlib.md5()
            while count < 4:  # 循环3次
                uesrname = input('请输入你的用户名:')
                password_ming = (input('请输入您的密码:'))
                m.update(password_ming.encode('utf-8'))  # 将输入的密码传入到md5的对象m中
                password = m.hexdigest()  # 将16进制形式的密码赋值给password
                mulu_path = os.path.dirname(os.path.dirname(__file__))  # 当前目录路径
                file_path = os.path.join(mulu_path, uesrname)  # 拼接成文件的路径
                try:  # 放在try中执行
                    fr = open(file_path, 'r')
                    dict_file = json.load(fr)
                    fr.close()
    
                    guoqishijian_tuple = t.strptime(dict_file['expire_date'], '%Y-%m-%d')  # 时间 元祖
                    guoqishijian = t.mktime(guoqishijian_tuple)  # 过期时间的时间戳
                    now_time = t.time()  # 当前时间的 时间戳
                    if dict_file['status'] == 0:  # 判断是否状态为0
                        if password == dict_file['password']:  # 判断是否登陆成功
                            if now_time < guoqishijian:  # 判断是否过期
                                print('登陆成功')
                                func(*arg)
                                break
                            else:
                                print('已过期')
                                break
                        else:
                            if count == 3:  # 如果输入了三次将dict_file['status'] = 1写入文件
                                print('账号已锁定')
                                with open(file_path, 'w', encoding='utf-8')as f:
                                    dict_file['status'] = 1
                                    json.dump(dict_file, f)
                                break
                            else:  # 否则提示密码错误
                                print('密码错误')
                    else:
                        print('已锁定')  # 否则提示已过期退出程序
                        break
    
                except Exception as e:
                    print('出错了{}'.format(e.args))
                count += 1  # count放在这里,如果文件名输入错误三次也退出
    
        return login_decorator
    
    
    
    
    
    """
    最近alex买了个Tesla Model S,通过转账的形式,并且支付了5%的手续费,tesla价格为95万。账户文件为json,请用程序实现该转账行为。
    需求如下:
    目录结构为
    .
    ├── account
    │   ├── alex.json
    │   └── tesla_company.json
    └── bin
          └── start.py
    当执行start.py时,出现交互窗口
       ———- ICBC Bank ————-.
      1.  账户信息
      2.  转账
    
    
    选择1 账户信息 显示alex的当前账户余额。
    选择2 转账 直接扣掉95万和利息费用并且tesla_company账户增加95万
    
    """
    
    @login_youhua_hash
    def bug_car(alex_yu_e, tesla_monkey):
        """
        不同目录购买特斯拉
        :param alex_yu_e: 你的余额
        :param tesla_monkey: 购买特斯拉所需要的钱
        :return:
        """
        select_num = input(
            (
    """
     ———- ICBC Bank ————-.
    1.  账户信息
    2.  转账
    """)
        )
    
        now_mulu_path = os.path.dirname(os.path.dirname(__file__))  # 当前所在目录
        alex_path = os.path.join(now_mulu_path, r'accountalex.json')  # 你的余额所在json文件路径
        tesla_path = os.path.join(now_mulu_path, r'account	esla_company.json')  # 特斯拉账户所在json文件路径
    
        with open(alex_path, 'w', encoding='utf-8')as f:
            json.dump({"alex_balace": alex_yu_e}, f)  # 写入余额
    
        with open(alex_path, 'r')as f:
            yue_dict = json.load(f)  # 将余额读取出来dict
    
        if select_num == str(1):
            print('alex当前余额:{}'.format(yue_dict['alex_balace']))  # 选择1时返回你的余额
    
        elif select_num == str(2):  # 选择2时将从你的余额扣除,特斯拉账户相应增加
            buy_yue = (int(yue_dict['alex_balace']) - tesla_monkey) - (tesla_monkey * 0.05)  # 你购买 特斯拉+税后 还剩下余额
            if buy_yue >= 0 :
                with open(alex_path, 'w', encoding='utf-8')as f:  # 写入还剩下的余额
                    json.dump({"alex_balace": buy_yue}, f)
    
                with open(tesla_path, 'w', encoding='utf-8')as f:  # 往特斯拉账户写入余额
                    json.dump({"tesla_balace": tesla_monkey}, f)
                print('购买tesla成功')
            else:
                print('你的余额不够买一辆特斯拉,穷鬼!!!')
    
    bug_car(1000000, 950000)
    # withdraw.withdraw_start(yue=1000000, line_of_credit=500000, withdraw_monkey=450000)
    # print(os.path.dirname(os.path.dirname(__file__)))
    
    
    import os
    import json
    import sys
    sys.path.append(r'..in')# 将bin目录添加到path中
    
    
    
    """
    对上题增加一个需求:提现。
    目录结构如下
    .
    ├── account
    │   └── alex.json
    │   └── tesla_company.json
    ├── bin
    │   └── start.py
    └── core
       └── withdraw.py
    
    当执行start.py时,出现交互窗口
    
       ———- ICBC Bank ————-
    1.  账户信息
    2.  提现
    
    选择1 账户信息 显示alex的当前账户余额和信用额度。
    选择2 提现 提现金额应小于等于信用额度,利息为5%,提现金额为用户自定义。
    体现代码的实现要写在withdraw.py里
    """
    
    
    def withdraw_start(yue, line_of_credit, withdraw_monkey):
        """
        实现一个提现的需求
        :param yue: 当前余额
        :param line_of_credit: 信用额度
        :param withdraw_monkey: 提现金额
        :return:
        """
        select_num = input(
            """
    ———- ICBC Bank ————-
    1.  账户信息
    2.  提现
            """
        )
        yue, line_of_credit, withdraw_monkey = int(yue), int(line_of_credit), int(withdraw_monkey)  # 类型转换
        now_on_mulu = os.path.dirname(os.path.dirname(__file__))
        alex_path = os.path.join(now_on_mulu, r'accountalex.json')
        with open(alex_path, 'w', encoding='utf-8')as f:
            json.dump({'alex_balace': yue, 'line_of_credit': line_of_credit}, f)  # 写入余额,信用额度
    
        with open(alex_path, 'r')as f:
            alex_dict = json.load(f)
    
        alex_yue = alex_dict['alex_balace']  # 你的当前余额
        alex_line_of_credit = alex_dict['line_of_credit']  # 你的信用额度
    
        if select_num == str(1):
            print('alex当前余额:{}'.format(alex_yue))
        elif select_num == str(2):
            if str(withdraw_monkey) > str(alex_line_of_credit):  # 判断提现金额是否小于信用额度
                print('你的胃口也太大了吧 ,不知道你的信用额度就这么点么!!!')
            else:
                alex_withdraw_monkey = alex_yue + withdraw_monkey  # 提现后的金额=当前余额+提现金额
                alex_line_of_credit = line_of_credit - withdraw_monkey - (withdraw_monkey * 0.05)  # 提现后信用额度=信用额度-提现金额-利息
                with open(alex_path, 'w', encoding='utf-8')as f:
                    json.dump({'alex_balace': alex_withdraw_monkey, 'line_of_credit': alex_line_of_credit}, f)
                print("""
                    提现成功:{}
                    当前账户余额:{}
                    当前信用额度:{}
                    """.format(withdraw_monkey, alex_withdraw_monkey, alex_line_of_credit))
        else:
            print('输入错误了哈!,认真读题~~~')
    
    
    withdraw_start(yue=1000000, line_of_credit=500000, withdraw_monkey=450000)
    
    
    

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  • 原文地址:https://www.cnblogs.com/shanshan-test/p/12640095.html
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