编写一个银行账户管理系统程序。银行客户信息以一个账户一条记录的形式存储，每个账户记录包含的信息有身份标识号（ID）、姓名、电话、电子邮箱、身份证号、银行卡号、账户余额等信息。

以下是一个简单的银行账户管理系统程序，包括添加账户、查看账户、删除账户和修改账户信息等功能。

class Account:
    def __init__(self, id, name, phone, email, id_card, card_num, balance):
        self.id = id
        self.name = name
        self.phone = phone
        self.email = email
        self.id_card = id_card
        self.card_num = card_num
        self.balance = balance
        
class Bank:
    def __init__(self):
        self.accounts = []
        
    def add_account(self, account):
        self.accounts.append(account)
        
    def view_account(self, id):
        for account in self.accounts:
            if account.id == id:
                print("ID:", account.id)
                print("Name:", account.name)
                print("Phone:", account.phone)
                print("Email:", account.email)
                print("ID Card:", account.id_card)
                print("Card Number:", account.card_num)
                print("Balance:", account.balance)
                return
        print("Account not found.")
        
    def delete_account(self, id):
        for account in self.accounts:
            if account.id == id:
                self.accounts.remove(account)
                print("Account deleted.")
                return
        print("Account not found.")
        
    def modify_account(self, id, name=None, phone=None, email=None, id_card=None, card_num=None, balance=None):
        for account in self.accounts:
            if account.id == id:
                if name:
                    account.name = name
                if phone:
                    account.phone = phone
                if email:
                    account.email = email
                if id_card:
                    account.id_card = id_card
                if card_num:
                    account.card_num = card_num
                if balance:
                    account.balance = balance
                print("Account modified.")
                return
        print("Account not found.")

使用示例：

bank = Bank()

# 添加账户
account1 = Account("1001", "Alice", "1234567890", "alice@example.com", "123456789012345678", "1111111111111111", 1000)
bank.add_account(account1)

# 查看账户
bank.view_account("1001")

# 修改账户
bank.modify_account("1001", phone="0987654321", balance=2000)
bank.view_account("1001")

# 删除账户
bank.delete_account("1001")
bank.view_account("1001")

输出：

ID: 1001
Name: Alice
Phone: 1234567890
Email: alice@example.com
ID Card: 123456789012345678
Card Number: 1111111111111111
Balance: 1000
Account modified.
ID: 1001
Name: Alice
Phone: 0987654321
Email: alice@example.com
ID Card: 123456789012345678
Card Number: 1111111111111111
Balance: 2000
Account not found.