mpesa2app.py

from abc import ABC, abstractmethod

# ---------------- ENCAPSULATION ----------------
class MpesaAccount:
    def __init__(self, name, balance):
        self.name = name
        self.__balance = balance   # private variable

    def deposit(self, amount):
        self.__balance += amount
        print(f"{amount} deposited. Balance: {self.__balance}")

    def withdraw(self, amount):
        if amount <= self.__balance:
            self.__balance -= amount
            print(f"{amount} withdrawn. Balance: {self.__balance}")
            return True
        return False

    def get_balance(self):
        return self.__balance


# ---------------- ABSTRACTION ----------------
class MpesaService(ABC):

    @abstractmethod
    def access_service(self, account, amount):
        pass


# ---------------- SEND MONEY ----------------
class SendMoney(MpesaService):

    def access_service(self, account, amount):
        if account.withdraw(amount):
            print(f"Sent {amount} to another us")

# ---------LIPA NA MPESA--------- 
class LipaNaMpesa(MpesaService):
    def access_service(self, account, amount):
        if account.withdraw(amount):
            print(f"Paid {amount} to merchant using Lipa na MPesa.")
        else:
            print("Payment failed:insufficent fund")