06-Object_oriented_programming/09_milestone_project_bank_solution.ipynb

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    "# Module 6: Object oriented programming\n",
    "\n",
    "## Part 9: Milestone project, bank account solution\n",
    "\n",
    "Description:\n",
    "Create a program that simulates a basic bank account management system using object-oriented programming principles. The program should allow the user to create multiple bank accounts, perform transactions such as deposits and withdrawals, and display the account details.\n",
    "\n",
    "Requirements:\n",
    "\n",
    "- Create a BankAccount class that represents a bank account. The class should have attributes such as account number, account holder name, and balance.\n",
    "- Implement methods in the BankAccount class to perform transactions, such as depositing and withdrawing funds.\n",
    "- Implement display account detail method, including the account number, account holder name, and current balance.\n",
    "\n",
    "Additional Features (optional):\n",
    "\n",
    "- Allow the user to create multiple bank accounts and perform transactions on each account.\n",
    "\n",
    "Considerations:\n",
    "\n",
    "- Design the class structure and attributes carefully to ensure logical representation of bank accounts.\n",
    "- Utilize object-oriented principles.\n",
    "- Break down the project into smaller methods or functions to improve code organization and readability.\n",
    "- Test the program with various scenarios to ensure correct behavior and handle edge cases."
   ]
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    "class BankAccount:\n",
    "    def __init__(self, account_number, account_holder, initial_balance=0.0):\n",
    "        self.account_number = account_number\n",
    "        self.account_holder = account_holder\n",
    "        self.balance = initial_balance\n",
    "\n",
    "    def deposit(self, amount):\n",
    "        if amount <= 0:\n",
    "            print(\"Invalid amount. Deposit amount must be greater than zero.\")\n",
    "        else:\n",
    "            self.balance += amount\n",
    "            print(f\"Deposit of {amount:.2f} successful. New balance: {self.balance:.2f}\")\n",
    "\n",
    "    def withdraw(self, amount):\n",
    "        if amount <= 0:\n",
    "            print(\"Invalid amount. Withdrawal amount must be greater than zero.\")\n",
    "        elif amount > self.balance:\n",
    "            print(\"Insufficient balance. Cannot withdraw more than the current balance.\")\n",
    "        else:\n",
    "            self.balance -= amount\n",
    "            print(f\"Withdrawal of {amount:.2f} successful. New balance: {self.balance:.2f}\")\n",
    "\n",
    "    def display_account_details(self):\n",
    "        print(\"\\nAccount Details\")\n",
    "        print(f\"Account Number: {self.account_number}\")\n",
    "        print(f\"Account Holder: {self.account_holder}\")\n",
    "        print(f\"Balance: {self.balance:.2f}\")\n",
    "\n",
    "\n",
    "def bank_account_management():\n",
    "    print(\"Bank Account Management System\")\n",
    "    print(\"-------------------------------\")\n",
    "\n",
    "    accounts = []\n",
    "    account_count = int(input(\"Enter the number of bank accounts to create: \"))\n",
    "\n",
    "    for i in range(account_count):\n",
    "        print(f\"\\nAccount {i+1} details:\")\n",
    "        account_number = input(\"Enter the account number: \")\n",
    "        account_holder = input(\"Enter the account holder name: \")\n",
    "        initial_balance = float(input(\"Enter the initial balance: \"))\n",
    "\n",
    "        account = BankAccount(account_number, account_holder, initial_balance)\n",
    "        accounts.append(account)\n",
    "\n",
    "    while True:\n",
    "        print(\"\\nMenu:\")\n",
    "        print(\"1. Deposit\")\n",
    "        print(\"2. Withdraw\")\n",
    "        print(\"3. Display Account Details\")\n",
    "        print(\"4. Exit\")\n",
    "\n",
    "        choice = input(\"Enter your choice (1-4): \")\n",
    "\n",
    "        if choice == '1':\n",
    "            account_index = int(input(\"Enter the account number: \")) - 1\n",
    "            if 0 <= account_index < len(accounts):\n",
    "                amount = float(input(\"Enter the deposit amount: \"))\n",
    "                accounts[account_index].deposit(amount)\n",
    "            else:\n",
    "                print(\"Invalid account number.\")\n",
    "\n",
    "        elif choice == '2':\n",
    "            account_index = int(input(\"Enter the account number: \")) - 1\n",
    "            if 0 <= account_index < len(accounts):\n",
    "                amount = float(input(\"Enter the withdrawal amount: \"))\n",
    "                accounts[account_index].withdraw(amount)\n",
    "            else:\n",
    "                print(\"Invalid account number.\")\n",
    "\n",
    "        elif choice == '3':\n",
    "            account_index = int(input(\"Enter the account number: \")) - 1\n",
    "            if 0 <= account_index < len(accounts):\n",
    "                accounts[account_index].display_account_details()\n",
    "            else:\n",
    "                print(\"Invalid account number.\")\n",
    "\n",
    "        elif choice == '4':\n",
    "            print(\"Exiting bank account management system...\")\n",
    "            break\n",
    "\n",
    "        else:\n",
    "            print(\"Invalid choice. Please try again.\")\n",
    "\n",
    "\n",
    "bank_account_management()"
   ]
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