Python programming (Basic)
Implement a class to represent a till. At the start of each transaction, the amount due from the customer is £0.00. As items are scanned, the amount due increases. The till should be able to report the current amount due at any time. Your class should implement the following methods: startTransaction(self) Sets the current transaction total to 0.00. addItem(self, amount) Adds the given amount to the total. (Assume this is of the form x.yz e.g 4.56) total(self) Returns the total amount due so far. Write code in a main method that creates a till object and simulates three transactions with items of varying amounts. Submit your solution to this in a file entitled a2q3.py 4. Implement a class named BankAccount. Every bank account has a starting balance of £0.00. The class should implement methods to accept deposits and make withdrawals, but an exception should be raised (hint: raise ValueError(“”) if a withdrawal is attempted for more money than is currently in the account. init(self) Sets the balance to 0. deposit(self, amount) Deposits money. Raises an exception if amount is less than zero. widthdraw(self, amount) Withdraws money. Raises an exception if the account is overdrawn balance(self) Returns the amount of money in the account. Submit your solution to this in a file entitled a2q4.py 5. Extend the previous problem by allowing transfers between accounts. Your code should support the following scenario: checking = BankAccount() savings = BankAccount() checking.deposit(500) checking.transfer(200, savings) print(checking.balance()) # should print 300 print(savings.balance()) # should print 200
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