In this task, we will build a system for buying and selling ice-cream.

Wallet Class

This class Wallet keeps track of money. It has the following properties and methods:

1. money: The amount of money in the wallet. Defaults to 0.
2. credit(amount): this method adds the amount to the money property, then prints the new value of money in a nice message.
3. debit(amount):this method subtracts the amount from the money property, then prints the new value of money in a nice message.

Person Class

This class Person defines a person with a name, location and wallet. It has the following properties and methods:

1. name: name of said person
2. location: a number that represents the person's place (Any number, don't overthink it).
3. wallet: a Wallet instance. Create a Wallet instance and pass it as a property to this class.
4. moveTo(point): updates the location property to point, then prints the new value of location in a nice message.

Vendor Class

This class Vendor is a subclass of Person. Yes, you need to inherit! It has the following properties and methods:

1. range: the maximum distance this vendor can travel - initially 5
2. price: the cost of a single ice cream - initially 1
3. sellTo(customer, number_of_icecreams): sells a specific number of ice creams to the customer by doing the following:
   • Moves to the customer's location
   • Transfers money from the customer's wallet to the vendor's wallet
   • Prints a nice message saying how many icecreams were sold

Customer Class

This class Customer is a subclass of Person. Yes, you need to inherit! It has the following properties and methods:

1. _is_in_range(vendor):
   • Checks if the customer is in range of vendor.
   • To check the range, you need to find the distance between the vendor and customer by subtracting their locations from each other (Convert it to a positive number).
   • If the distance is less than or equal to the vendor's range, then this customer is within range.
   • Prints a message saying that the customer is in range or not
2. _have_enough_money(vendor, number_of_icecreams):
   • Checks if the customer has enough money to buy a specific number of ice creams from vendor.
   • Prints a message saying if the customer has enough money or not.
3. request_icecream(vendor, number_of_icecreams):
   • If the customer is in the vendor's range and has enough money for ice cream, a request is sent to the vendor.
   • Print a message saying that a request has been made.