himanshu1295/python_5

Abstract Classes and Methods in python

Lab Instructions: Abstract Classes and Methods

In this assignment, you will be creating an abstract class for a bank that will be used to create a regular class for a specific bank.
This class will contain the implementation of the abstract method from the abstract class.

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Exercise Instructions

Instructions

1. Create a class called Bank and pass ABC to it.

2. Inside the class you have to define two methods:

   • 2.1: Define a function called basicinfo() and add a print statement inside it saying
     "This is a generic bank" and returning the string "Generic bank: 0".

   • 2.2: Define a second function called withdraw and keep it empty by adding a pass keyword under it.
     Make this function abstract by adding '@abstractmethod' right above it.
     
     

3. Create another class called Swiss and pass the class Bank inside it. This means you are inheriting from class Bank.

   • 3.1: Create a constructor for this class that initializes a class variable bal to 1000
     
     

4. Override both functions from the Bank class: basicinfo() and withdraw().

   • 4.1: Define a function called basicinfo() and add a print statement inside it stating “This is the Swiss Bank”
     and returning a string with "Swiss Bank: " followed by the current bank balance.
     For example, if self.bal = 80, then it would return "Swiss Bank: 80"

   • 4.2 Define a second function, called withdraw and pass one parameter to it (other than self): amount.
     Amount represents the amount that will be withdrawn.

     • 4.2.1: Update the class variable bal by deducting the value of amount from it.
     • 4.2.2: Print the value of amount giving output such as: “Withdrawn amount: 30"
     • 4.2.3: Print the new balance giving an output such as: “New balance: 970”
     • 4.2.4: Return the new balance
     • Note: Make sure to verify that there is enough money to withdraw!
       If amount is greater than balance, then do not deduct any money from the class variable bal. Instead, print a statement saying "Insufficient funds", and return the original account balance instead.