Exercise 10-08:

Change the program to produce a message stating the user has an insufficient account balance if the user attempts to withdraw more than the available balance.

Answer:

##############################################################################
# Python From Scratch
# Author: Nilo Ney Coutinho Menezes
# Editora Novatec (c) 2010-2025 - LogiKraft 2025
# Site: https://pythonfromscratch.com
# ISBN: 978-85-7522-949-1 (Paperback), 978-85-7522-950-7 (hardcover), 978-85-7522-951-4 (ebook)
#
# File: chapter 10/exercise-10-08.py.py
##############################################################################
# Modify the accounts.py file from the listings


class Account:
    def __init__(self, clients, number, balance=0):
        self.balance = 0
        self.clients = clients
        self.number = number
        self.operations = []
        self.deposit(balance)

    def summary(self):
        print(f"AC N°{self.number} Balance: {self.balance:10.2f}")

    def withdraw(self, value):
        if self.balance >= value:
            self.balance -= value
            self.operations.append(["WITHDRAW", value])
        else:
            print("Insufficient balance!")

    def deposit(self, value):
        self.balance += value
        self.operations.append(["DEPOSIT", value])

    def statement(self):
        print(f"Statement AC N° {self.number}\n")
        for o in self.operations:
            print(f"{o[0]:10s} {o[1]:10.2f}")
        print(f"\n    Balance: {self.balance:10.2f}\n")


class SpecialAccount(Account):
    def __init__(self, clients, number, balance=0, limit=0):
        Account.__init__(self, clients, number, balance)
        self.limit = limit

    def withdraw(self, value):
        if self.balance + self.limit >= value:
            self.balance -= value
            self.operations.append(["WITHDRAW", value])
        else:
            Account.withdraw(self, value)
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