The image contains a snippet of Python code related to account and banking operations, demonstrating class inheritance and method implementation.### Code Explanation#### Account ClassThis class models a simple bank account that allows for deposits and withdrawals.- **Attributes:** - `balance`: Tracks the current balance. - `holder`: The account holder's name. - `transactions`: A list that records all transactions with their types (deposit or withdrawal).- **Methods:** - `__init__(self, account_holder)`: Initializes a bank account with a holder and a zero balance. - `deposit(self, amount)`: Increases the balance by `amount` and records the transaction. - `withdraw(self, amount)`: Decreases the balance by `amount` if sufficient funds exist, otherwise returns an error message indicating insufficient funds.#### CheckingAccount ClassThis class inherits from `Account` and represents a checking account that charges for withdrawals.- **Attributes:** - Inherits attributes from `Account`. - New attributes include `withdraw_fee`, a fee for withdrawals, and `interest` for account interest.- **Methods:** - `withdraw(self, amount)`: Overrides the `withdraw` method from `Account` to include the `withdraw_fee`.#### Check ClassThis section is a placeholder for additional code to be added. This class would likely model checks and have methods relevant to their functionality, such as processing and depositing checks.### Sample OutputThe sample execution in the code shows how an `Account` and `CheckingAccount` might be used:- An account is created for Eric, and transactions such as deposits and withdrawals are performed with confirmation of balances.- A `Check` instance is shown, emphasizing how a check is deposited into a checking account, including error handling for improper deposits.Overall, the code demonstrates basic object-oriented programming principles with a focus on financial transactions.

Python:- Python is a broadly useful and one of the abnormal state programming languages. A variable…

We'd like to be able to cash checks, so let's add a deposit check method to our CheckingAccount class. It will take a Check object as an argument, and check to see if the payable to attribute matches the CheckingAccount 's holder. If so, it marks the Check as deposited, and adds the amount specified to the CheckingAccount 's total. Write an appropriate Check class, and add the deposit_check method to the CheckingAccount class. Make sure not to copy and paste code! Use inheritance whenever possible. See the doctests for examples of how this code should work. The Account class has been provided.

We'd like to be able to cash checks, so let's add a deposit check method to our CheckingAccount class. It will take a Check object as an argument, and check to see if the payable to attribute matches the CheckingAccount 's holder. If so, it marks the Check as deposited, and adds the amount specified to the CheckingAccount 's total. Write an appropriate Check class, and add the deposit_check method to the CheckingAccount class. Make sure not to copy and paste code! Use inheritance whenever possible. See the doctests for examples of how this code should work. The Account class has been provided.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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