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Extra Lab 8 - Solved (can also review) #115

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197 changes: 180 additions & 17 deletions lab-python-oop.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -56,21 +56,68 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 1,
"id": "21625526-3fae-4c55-bab5-f91940070681",
"metadata": {},
"outputs": [],
"source": [
"# your code goes here\n",
"\n"
"class BankAccount:\n",
" # Class attribute to track total accounts created\n",
" account_count = 0\n",
"\n",
" def __init__(self, balance=0):\n",
" # Increment the class counter every time a new instance is created\n",
" BankAccount.account_count += 1\n",
" \n",
" # Instance attributes\n",
" self.account_number = BankAccount.account_count\n",
" self.balance = balance\n",
"\n",
" def deposit(self, amount):\n",
" if amount > 0:\n",
" self.balance += amount\n",
" print(f\"Deposited {amount}. New balance: {self.balance}\")\n",
" else:\n",
" print(\"Deposit amount must be positive.\")\n",
"\n",
" def withdraw(self, amount):\n",
" if amount > self.balance:\n",
" print(f\"Insufficient balance! Current funds: {self.balance}\")\n",
" elif amount <= 0:\n",
" print(\"Withdrawal amount must be positive.\")\n",
" else:\n",
" self.balance -= amount\n",
" print(f\"Withdrew {amount}. Remaining balance: {self.balance}\")\n",
"\n",
" def get_balance(self):\n",
" return self.balance\n",
"\n",
" def get_account_number(self):\n",
" return self.account_number\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 2,
"id": "ee789466-d4cf-4dd8-b742-6863d42c3e5c",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Account 1 balance: 1000\n",
"Account 1 number: 1\n",
"Account 2 balance: 500\n",
"Account 2 number: 2\n",
"Deposited 500. New balance: 1500\n",
"Withdrew 200. Remaining balance: 1300\n",
"Account 1 balance after transactions: 1300\n",
"Insufficient balance! Current funds: 500\n",
"Account 2 balance after transactions: 500\n"
]
}
],
"source": [
"# Testing the BankAccount class\n",
"# Creating two instances of the BankAccount class with initial balances of 1000 and 500\n",
Expand Down Expand Up @@ -117,12 +164,25 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 3,
"id": "4f8848b5-05d3-4259-9e24-914537926778",
"metadata": {},
"outputs": [],
"source": [
"# your code goes here"
"class SavingsAccount(BankAccount):\n",
" def __init__(self, balance=0, interest_rate=0.01):\n",
" # Initialize the parent class (BankAccount)\n",
" super().__init__(balance)\n",
" # Add the specific attribute for Savings\n",
" self.interest_rate = interest_rate\n",
"\n",
" def add_interest(self):\n",
" interest_earned = self.balance * self.interest_rate\n",
" self.balance += interest_earned\n",
" # We don't necessarily need to return anything, just update self.balance\n",
"\n",
" def get_interest_rate(self):\n",
" return self.interest_rate"
]
},
{
Expand Down Expand Up @@ -151,12 +211,38 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 4,
"id": "bccc7f6d-d58c-4909-9314-aaf4afc1cd30",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Deposited 50. New balance: 150\n",
"Withdrew 25. Remaining balance: 125\n",
"Current balance: 127.5\n",
"Interest rate: 0.02\n"
]
}
],
"source": [
"# your code goes here"
"# 1. Create a SavingsAccount with $100 and 2% (0.02) interest\n",
"savings = SavingsAccount(100, 0.02)\n",
"\n",
"# 2. Deposit $50\n",
"savings.deposit(50) # Balance is now 150\n",
"\n",
"# 3. Withdraw $25\n",
"savings.withdraw(25) # Balance is now 125\n",
"\n",
"# 4. Add interest \n",
"# Note: The object was created with 0.02, so it will use 2%\n",
"savings.add_interest() # 125 * 0.02 = 2.5. New balance: 127.5\n",
"\n",
"# 5. Print results\n",
"print(f\"Current balance: {savings.get_balance()}\")\n",
"print(f\"Interest rate: {savings.get_interest_rate()}\")"
]
},
{
Expand Down Expand Up @@ -189,12 +275,46 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 5,
"id": "3c883c6e-3cb8-4043-92d3-12409668a28e",
"metadata": {},
"outputs": [],
"source": [
"# your code goes here"
"class CheckingAccount(BankAccount):\n",
" def __init__(self, balance=0, transaction_fee=1):\n",
" # Initialize parent class attributes\n",
" super().__init__(balance)\n",
" # Add CheckingAccount specific attributes\n",
" self.transaction_fee = transaction_fee\n",
" self.transaction_count = 0\n",
"\n",
" def deposit(self, amount):\n",
" # Call the parent deposit logic\n",
" super().deposit(amount)\n",
" # Increment transaction count\n",
" self.transaction_count += 1\n",
"\n",
" def withdraw(self, amount):\n",
" # Call the parent withdraw logic\n",
" # Note: We only count the transaction if it was successful (optional but realistic)\n",
" # For this exercise, we follow the instruction to update count upon call\n",
" super().withdraw(amount)\n",
" self.transaction_count += 1\n",
"\n",
" def deduct_fees(self):\n",
" total_fees = self.transaction_count * self.transaction_fee\n",
" if self.balance >= total_fees:\n",
" self.balance -= total_fees\n",
" print(f\"Transaction fees of {total_fees}$ have been deducted from your account balance.\")\n",
" self.reset_transactions()\n",
" else:\n",
" print(\"Error: Insufficient balance to deduct transaction fees.\")\n",
"\n",
" def reset_transactions(self):\n",
" self.transaction_count = 0\n",
"\n",
" def get_transaction_count(self):\n",
" return self.transaction_count"
]
},
{
Expand Down Expand Up @@ -234,18 +354,61 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 6,
"id": "faa5b148-c11b-4be0-b810-de8a7da81451",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Deposited 100. New balance: 600\n",
"Withdrew 50. Remaining balance: 550\n",
"Transaction fees of 4$ have been deducted from your account balance.\n",
"Current balance: 546\n",
"Transaction count: 0\n",
"--------------------\n",
"Deposited 200. New balance: 746\n",
"Withdrew 75. Remaining balance: 671\n",
"Transaction fees of 4$ have been deducted from your account balance.\n",
"Current balance: 667\n",
"Transaction count: 0\n"
]
}
],
"source": [
"# your code goes here"
"# 1. Create a new checking account ($500 balance, $2 fee)\n",
"checking = CheckingAccount(500, 2)\n",
"\n",
"# 2. Deposit $100 (Transaction count: 1)\n",
"checking.deposit(100) \n",
"\n",
"# 3. Withdraw $50 (Transaction count: 2)\n",
"checking.withdraw(50) \n",
"\n",
"# 4. Deduct fees ($2 * 2 transactions = $4)\n",
"checking.deduct_fees()\n",
"\n",
"# 5. Get balance and count\n",
"print(f\"Current balance: {checking.get_balance()}\")\n",
"print(f\"Transaction count: {checking.get_transaction_count()}\")\n",
"\n",
"print(\"-\" * 20)\n",
"\n",
"# 6. Second round of transactions\n",
"checking.deposit(200) # (Count: 1)\n",
"checking.withdraw(75) # (Count: 2)\n",
"checking.deduct_fees() # ($2 * 2 transactions = $4)\n",
"\n",
"# 7. Final status\n",
"print(f\"Current balance: {checking.get_balance()}\")\n",
"print(f\"Transaction count: {checking.get_transaction_count()}\")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -259,7 +422,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
Expand Down