Method update_balance

bank_managment_system/backend.py:109–113

(self, amount, acc_no)

        self.conn.commit()

    def update_balance(self, amount, acc_no):
        self.cur.execute(
            "UPDATE bank SET balance = balance + ? WHERE acc_no=?", (amount, acc_no)
        )
        self.conn.commit()

    def deduct_balance(self, amount, acc_no):
        self.cur.execute("SELECT balance FROM bank WHERE acc_no=?", (acc_no,))