Python Project Car Rental System With Source Code , Checklist , Code Editor Etc.

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SeekhoCoding

class Car:
    def __init__(self, car_id, model):
        self.car_id = car_id
        self.model = model
        # True means available for rent, False means already rented
        self.is_available = True

def get_status_string(self):
        status = "Available" if self.is_available else "Rented"
        return f"ID: {self.car_id} | Model: {self.model} | Status: {status}"

class RentalAgency:
    def __init__(self):
        # Local system inventory list
        self.fleet = []

def add_car(self, car_obj):
        self.fleet.append(car_obj)
        print(f"✅ Added {car_obj.model} to inventory.")

def rent_car(self, car_id):
        # Find matching car index
        for car in self.fleet:
            if car.car_id == car_id:
                # Validation Logic 1: Trap double checkouts
                if not car.is_available:
                    print(f"❌ Error: {car.model} is already rented out!")
                    return
                car.is_available = False
                print(f"🔑 Success: {car.model} has been rented.")
                return
        print(f"❌ Warning: Car ID {car_id} not found.")

def return_car(self, car_id):
        for car in self.fleet:
            if car.car_id == car_id:
                # Validation Logic 2: Block faulty return requests
                if car.is_available:
                    print(f"❌ Error: {car.model} was never rented!")
                    return
                car.is_available = True
                print(f"🚗 Success: {car.model} returned safely.")
                return
        print(f"❌ Warning: Car ID {car_id} not found.")

def view_inventory(self):
        print("\n--- Current Fleet Inventory ---")
        # Validation Logic 3: Handle empty fleet case
        if not self.fleet:
            print("❌ System Warning: No cars exist in database.")
            return
        for car in self.fleet:
            print(car.get_status_string())

# Explicit main execution function block to bypass Pyodide sandbox bugs
def run_rental_system():
    agency = RentalAgency()
    
    print("--- Step 1: Loading Fleet Vehicles ---")
    c1 = Car("C001", "Tesla Model 3")
    c2 = Car("C002", "Toyota Camry")
    agency.add_car(c1)
    agency.add_car(c2)
    
    print("\n--- Step 2: Processing Rental Tasks ---")
    agency.rent_car("C001")  # Valid rental
    agency.rent_car("C001")  # Negative check: double checkout
    agency.return_car("C002") # Negative check: returning available car
    agency.return_car("C001") # Valid return
    
    print("\n--- Step 3: Querying System Status ---")
    agency.view_inventory()

# Fire application sequence directly
run_rental_system()