In Python

Implement a class Portfolio. This class has two objects, checking and savings, of the type BankAccount that was developed in bankaccount.py.

Implement four methods:

def deposit(self, amount, account) def withdraw(self, amount, account) def transfer(self, amount, account) def getBalance(self, account)

Here the account string is "C" or "S". For the deposit or withdrawal, it indicates which account is affected. For a transfer, it indicates the account from which the money is taken; the money is automatically transferred to the other account.

Please include: Comment, docstring and output of the code

bankaccount.py:

##

# This module defines a class that models a bank account.

#

## A bank account has a balance that can be changed by deposits and withdrawals.

#

class BankAccount :

## Constructs a bank account with a given balance.

# @param initialBalance the initial account balance (default = 0.0)

#

def __init__(self, initialBalance = 0.0) :

self._balance = initialBalance

## Deposits money into this account.

# @param amount the amount to deposit

#

def deposit(self, amount) :

self._balance = self._balance + amount

## Makes a withdrawal from this account, or charges a penalty if

# sufficient funds are not available.

# @param amount the amount of the withdrawal

#

def withdraw(self, amount) :

PENALTY = 10.0

if amount > self._balance :

self._balance = self._balance - PENALTY

else :

self._balance = self._balance - amount

## Adds interest to this account.

# @param rate the interest rate in percent

#

def addInterest(self, rate) :

amount = self._balance * rate / 100.0

self._balance = self._balance + amount

## Gets the current balance of this account.

# @return the current balance

#

def getBalance(self) :

return self._balance