面向对象课后习题出了这个题目，思考以及查资料后许久终于搞定了，哎，老师是在为难我们咩！！！ 代码如下：
import prettytable as pt # 表格形式显示 import time bank_log = [] # 初始化银行交易日志 class Bank: '''银行类''' def __init__(self): """初始化""" self.money = 0 # 封装和初始化金额 self.bank_log = bank_log def deposit(self): """存款""" amount = float(input("请输入存款金额： ")) self.money += amount self.write_log(amount, '转入') def withdrawl(self): """取款""" amount = float(input("请输入取款金额： ")) if amount > self.money: print("余额不足") else: self.money -= amount self.write_log(amount, "消费") def transaction_log(self): """打印交易日志""" tb = pt.PrettyTable() tb.field_names = ['交易日期', '摘要', '金额', '币种', '余额'] # 设置表头 for info in self.bank_log: # 判断转入还是消费，为金额前添加“+” 或“-” if info[1] == '转入': amout = "+{}".format(info[2]) else: amout = "-{}".format(info[2]) tb.add_row([info[0], info[1], amout, '人民币', info[3]]) print(tb) def write_log(self, amount, handle): """写入日志""" # 按照指定形式获取时间 creat_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())) data = [creat_time, handle, amount, self.money] # 组装列表 self.bank_log.append(data) # 写入日志信息 def display(): """显示菜单栏""" menu = """ ====================银行账户资金交易管理==================== 0：退出 1：存款 2：取款 3：打印交易详情 ========================================================== """ print(menu) if __name__ == '__main__': display() # 显示菜单 account = Bank() # 创建对象 while True: choice = int(input("请输入您的选择： ")) if choice == 0: exit(0) print("退出系统") elif choice == 1: flag = True while flag: # deposit_money = float(input('存款金额： ')) account.deposit() flag = True if input("是否继续存款（yes/no）: ").lower() == "yes" else False elif choice == 2: flag = True while flag: # wd_money = float(input("取款金额： ")) account.withdrawl() flag = True if input("是否继续取款（yes/no）:").lower() == 'yes' else False elif choice == 3: account.transaction_log() else: print("请重新选择正确的序号") import prettytable as pt # 表格形式显示 import time bank_log = [] # 初始化银行交易日志 class Bank: '''银行类''' def __init__(self): """初始化""" self.money = 0 # 封装和初始化金额 self.bank_log = bank_log def deposit(self): """存款""" amount = float(input("请输入存款金额： ")) self.money += amount self.write_log(amount, '转入') def withdrawl(self): """取款""" amount = float(input("请输入取款金额： ")) if amount > self.money: print("余额不足") else: self.money -= amount self.write_log(amount, "消费") def transaction_log(self): """打印交易日志""" tb = pt.PrettyTable() tb.field_names = ['交易日期', '摘要', '金额', '币种', '余额'] # 设置表头 for info in self.bank_log: # 判断转入还是消费，为金额前添加“+” 或“-” if info[1] == '转入': amout = "+{}".format(info[2]) else: amout = "-{}".format(info[2]) tb.add_row([info[0], info[1], amout, '人民币', info[3]]) print(tb) def write_log(self, amount, handle): """写入日志""" # 按照指定形式获取时间 creat_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())) data = [creat_time, handle, amount, self.money] # 组装列表 self.bank_log.append(data) # 写入日志信息 def display(): """显示菜单栏""" menu = """ ====================银行账户资金交易管理==================== 0：退出 1：存款 2：取款 3：打印交易详情 ========================================================== """ print(menu) if __name__ == '__main__': display() # 显示菜单 account = Bank() # 创建对象 while True: choice = int(input("请输入您的选择： ")) if choice == 0: exit(0) print("退出系统") elif choice == 1: flag = True while flag: # deposit_money = float(input('存款金额： ')) account.deposit() flag = True if input("是否继续存款（yes/no）: ").lower() == "yes" else False elif choice == 2: flag = True while flag: # wd_money = float(input("取款金额： ")) account.withdrawl() flag = True if input("是否继续取款（yes/no）:").lower() == 'yes' else False elif choice == 3: account.transaction_log() else: print("请重新选择正确的序号") import prettytable as pt # 表格形式显示 import time bank_log = [] # 初始化银行交易日志 class Bank: '''银行类''' def __init__(self): """初始化""" self.money = 0 # 封装和初始化金额 self.bank_log = bank_log def deposit(self): """存款""" amount = float(input("请输入存款金额： ")) self.money += amount self.write_log(amount, '转入') def withdrawl(self): """取款""" amount = float(input("请输入取款金额： ")) if amount > self.money: print("余额不足") else: self.money -= amount self.write_log(amount, "消费") def transaction_log(self): """打印交易日志""" tb = pt.PrettyTable() tb.field_names = ['交易日期', '摘要', '金额', '币种', '余额'] # 设置表头 for info in self.bank_log: # 判断转入还是消费，为金额前添加“+” 或“-” if info[1] == '转入': amout = "+{}".format(info[2]) else: amout = "-{}".format(info[2]) tb.add_row([info[0], info[1], amout, '人民币', info[3]]) print(tb) def write_log(self, amount, handle): """写入日志""" # 按照指定形式获取时间 creat_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())) data = [creat_time, handle, amount, self.money] # 组装列表 self.bank_log.append(data) # 写入日志信息 def display(): """显示菜单栏""" menu = """ ====================银行账户资金交易管理==================== 0：退出 1：存款 2：取款 3：打印交易详情 ========================================================== """ print(menu) if __name__ == '__main__': display() # 显示菜单 account = Bank() # 创建对象 while True: choice = int(input("请输入您的选择： ")) if choice == 0: exit(0) print("退出系统") elif choice == 1: flag = True while flag: # deposit_money = float(input('存款金额： ')) account.deposit() flag = True if input("是否继续存款（yes/no）: ").lower() == "yes" else False elif choice == 2: flag = True while flag: # wd_money = float(input("取款金额： ")) account.withdrawl() flag = True if input("是否继续取款（yes/no）:").lower() == 'yes' else False elif choice == 3: account.transaction_log() else: print("请重新选择正确的序号")PS：如有需要Python学习资料的小伙伴可以加点击下方链接自行获取
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