In what concerns the continuous evaluation solving exercises grade during the semester, you should submit until 23:59 of January 18th
(this exercise will still be available for submission after that deadline, but without counting towards your grade)
[to understand the context of this problem, you should read the class #12 exercise sheet]

In this problem you should submit a class as described. Inside the class do not print anything that was not asked!

[IP104] Ambitious Pepe

Now that IP students have learned the basics of programming, they can become filthy rich 😁 At least if they code the bank application!

The Problem

Create a BankAccount class that has the following attributes: account_holder (string) and balance (number).

You should start by creating the __init__ initializer to be able to create a new account with the account_holder name and an optional initial balance, balance.
By default, the balance should be initialized to 0.0.

Then, add some methods to the BankAccount class that allow you to perform certain operations on any bank account:

• check_balance: Returns the current account balance.
• deposit: Takes a certain amount and adds that specified amount to the account balance. Assume that the deposit amount is always positive.
• withdraw: Takes a certain amount and deducts the specified amount from the account balance if there are sufficient funds.
  In case there aren't sufficient funds, the method should print "Invalid Operation: insufficient funds." and the current balance should remain unchanged. Assume that the withdraw amount is always positive.
• transfer: Allows to transfer money between two accounts if there are sufficient funds. Assume that two valid accounts are given.
  In case there aren't sufficient funds, the method should print "Invalid Operation: insufficient funds." and the current balance of both accounts should remain unchanged.

Constraints

The following constraints are guaranteed in all the test cases that will be given to your program:

• When creating an account, account_holder will always be given, but the initial balance might not be.
  In that case, the balance should be 0.0 by default (check the Examples section).
• The amount values given to the deposit, withdraw and transfer methods will always be positive numbers (they can be integers or floats).
  However, there might be insufficient funds in the account when trying to withdraw or transfer from it.
• Only valid accounts will be given to your program.

account_1 = BankAccount("Joy", 3000)
print(account_1.account_holder)
print(account_1.balance)
account_2 = BankAccount("James")
print(account_2.account_holder)
print(account_2.balance)

Joy
3000
James
0.0

account_1 = BankAccount("Joy", 3000)
print(account_1.check_balance())

3000

account_1 = BankAccount("Joy", 3000)
print(account_1.check_balance())
account_1.deposit(5000)
print(account_1.check_balance())

3000
8000

account_1 = BankAccount("Joy", 3000)
print(account_1.check_balance())
account_1.withdraw(2000)
print(account_1.check_balance())

3000
1000

account_1 = BankAccount("Joy", 3000)
print(account_1.check_balance())
account_1.withdraw(5000)
print(account_1.check_balance())

3000
Invalid Operation: insufficient funds.
3000

account_1 = BankAccount("Joy", 3000)
account_2 = BankAccount("James")
print(account_1.check_balance())
print(account_2.check_balance())
account_1.transfer(account_2, 600)
print(account_1.check_balance())
print(account_2.check_balance())

3000
0.0
2400
600.0

account_1 = BankAccount("Joy", 3000)
account_2 = BankAccount("James")
print(account_1.check_balance())
print(account_2.check_balance())
account_1.transfer(account_2, 5000)
print(account_1.check_balance())
print(account_2.check_balance())

3000
0.0
Invalid Operation: insufficient funds.
3000
0.0