Create accounts.py

banking/accounts.py

@@ -0,0 +1,34 @@
+class BankAccount:
+    """
+    Represents a bank account with a balance and transaction history.
+    """
+    def __init__(self, account_number, balance=0):
+        """
+        Initializes a new bank account with the specified account number and balance.
+        """
+        self.account_number = account_number
+        self.balance = balance
+        self.transaction_history = []
+
+    def deposit(self, amount):
+        """
+        Deposits the specified amount into the bank account.
+        """
+        self.balance += amount
+        self.transaction_history.append(f"Deposit: ${amount:.2f}")
+
+    def withdraw(self, amount):
+        """
+        Withdraws the specified amount from the bank account, if sufficient funds are available.
+        """
+        if self.balance >= amount:
+            self.balance -= amount
+            self.transaction_history.append(f"Withdraw: ${amount:.2f}")
+        else:
+            raise InsufficientFundsError(f"Insufficient funds to withdraw ${amount:.2f} from account {self.account_number}")
+
+class InsufficientFundsError(Exception):
+    """
+    Raised when there are insufficient funds to complete a withdrawal.
+    """
+    pass