Python实现银行账户资金交易管理系统

#coding: utf-8
import time
import prettytable as pt
money = 0
acount_logs = []
class Account:
 def __init__(self):
 global money
 self.money = money
 self.acount_logs = acount_logs
 def deposit(self):
 amount = float(input('存入金额：'))
 self.money += amount
 self.write_log(amount,'转入')
 def withdrawl(self):
 amount = float(input('取出金额：'))
 if amount > self.money:
  print('余额不足')
 else:
  self.money -= amount
  self.write_log(amount,'取出')
 def transaction_log(self):
 tb = pt.PrettyTable()
 tb.field_names = ["交易日期","摘要","金额","币种","余额"]
 for info in self.acount_logs:
  if info[1] =='转入':
  amount = '+{}'.format(info[2])
  else:
  amount = '-{}'.format(info[2])
  tb.add_row([info[0],info[1],amount,'人民币',info[3]])
  print(tb)
 def write_log(self,amout,handle):
 create_time = time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
 data =[create_time,handle,amout,self.money]
 self.acount_logs.append(data)
def show_menu():
 """ 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__':
 show_menu()
 account = Account()
 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:
  account.deposit()
  flag = True if input("是否继续存款(Y|N): ").lower()== 'y' else False
 elif choice == 2:
  flag = True
  while flag:
  account.withdrawl()
  flag = True if input("是否继续取款(Y|N): ").lower()== 'y' else False
 elif choice == 3:
  account.transaction_log()
 else:
  print("请选择正确的编号")

====================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
===========================================================
 
请输入您的选择: 1
存入金额：300
是否继续存款(Y|N): N
请输入您的选择: 2
取出金额：300
是否继续取款(Y|N): Y
取出金额：100
余额不足
是否继续取款(Y|N): N
请输入您的选择: 3
+---------------------+------+--------+--------+-------+
|  交易日期  | 摘要 | 金额 | 币种 | 余额 |
+---------------------+------+--------+--------+-------+
| 2020-01-02 19:53:54 | 转入 | +300.0 | 人民币 | 300.0 |
+---------------------+------+--------+--------+-------+
+---------------------+------+--------+--------+-------+
|  交易日期  | 摘要 | 金额 | 币种 | 余额 |
+---------------------+------+--------+--------+-------+
| 2020-01-02 19:53:54 | 转入 | +300.0 | 人民币 | 300.0 |
| 2020-01-02 19:54:02 | 取出 | -300.0 | 人民币 | 0.0 |
+---------------------+------+--------+--------+-------+

请输入您的选择: 5
请选择正确的编号
请输入您的选择: 0
Process finished with exit code 0