在业务中构建繁忙的REL会计软件

class Account:    def __init__(self, name, initial_balance=0):        self.name = name        self.balance = initial_balance        self.transactions = []    def deposit(self, amount):        if amount < 0:            raise ValueError("Deposit amount must be positive.")        self.balance += amount        self.transactions.append(f"Deposited: +{amount}")    def withdraw(self, amount):        if amount < 0:            raise ValueError("Withdrawal amount must be positive.")        if amount > self.balance:            raise ValueError("Insufficient balance.")        self.balance -= amount        self.transactions.append(f"Withdrew: -{amount}")    def transfer(self, amount, target_account):        if amount < 0:            raise ValueError("Transfer amount must be positive.")        self.withdraw(amount)        target_account.deposit(amount)        self.transactions.append(f"Transferred: -{amount} to {target_account.name}")        target_account.transactions.append(f"Received: +{amount} from {self.name}")    def get_balance(self):        return self.balance    def get_transaction_history(self):        return self.transactions

class AccountingSoftware:    def __init__(self):        self.accounts = {}    def create_account(self, name, initial_balance=0):        if name in self.accounts:            raise ValueError("Account already exists.")        self.accounts[name] = Account(name, initial_balance)        print(f"Account '{name}' created with an initial balance of {initial_balance}.")    def get_account(self, name):        if name not in self.accounts:            raise ValueError("Account does not exist.")        return self.accounts[name]    def generate_report(self):        print("--- Accounting Report ---")        for account_name, account in self.accounts.items():            print(f"Account: {account_name}")            print(f"Balance: {account.get_balance()}")            print("Transaction History:")            for transaction in account.get_transaction_history():                print(f"  - {transaction}")        print("--- End of Report ---")

if __name__ == "__main__":    software = AccountingSoftware()    # 创建账户    software.create_account("Cash", initial_balance=1000)    software.create_account("Bank", initial_balance=5000)    software.create_account("Revenue", initial_balance=0)    # 执行交易    cash_account = software.get_account("Cash")    bank_account = software.get_account("Bank")    revenue_account = software.get_account("Revenue")    cash_account.deposit(500)    cash_account.withdraw(200)    cash_account.transfer(300, bank_account)    revenue_account.deposit(1000)    # 生成报表    software.generate_report()