actuel.py

from datetime import datetime

class BankAccount:
    def __init__(self, owner: str, initial_balance:int):
        self._owner = owner
        self._balance = initial_balance

    def print(self):
        print(f"This account belongs to {self._owner} with a balance of ${self._balance}")

    def _credit(self, value: int):
        self._balance += value

    def transfer_to(self, recipient: "BankAccount", value: int, transaction_date: datetime):
        self._credit(-value)
        recipient._credit(value)

class InsufficientBalance(ValueError):
    pass

class BlockedBankAccount(BankAccount):
    def transfer_to(self, recipient: "BankAccount", value: int, transaction_date: datetime):
        if self._balance < value:
            raise InsufficientBalance(f"{self._owner} does not have a sufficient balance to execute this transfer")
        super().transfer_to(recipient, value, transaction_date)

class AgiosBankAccount(BankAccount):
    def transfer_to(self, recipient: "BankAccount", value: int, transaction_date: datetime):
        super().transfer_to(recipient, value, transaction_date)



bank = BankAccount("LCL", 10000)
walmart = BlockedBankAccount("Walmart", 5000)
alice = BlockedBankAccount("Alice Worz", 500)
bob = BlockedBankAccount("Bob Müller", 100)

try:
    #1.4.1. Alice buys $100 of goods at Walmart
    alice.transfer_to(walmart, 100, datetime(2022, 12, 1))
    #1.4.2. Bob buys $100 of goods at Walmart
    bob.transfer_to(walmart, 100, datetime(2022, 12, 3))
    #1.4.3. Alice makes a donation of $100 to Bob
    alice.transfer_to(bob, 100, datetime(2022, 12, 7))
    #1.4.4. Bob buys $200 at Walmart
    bob.transfer_to(walmart, 200, datetime(2022, 12, 10))
except InsufficientBalance:
    print("This scenario cannot be executed")

for account in [bank, walmart, alice, bob]:
    account.print()