main.py

class Car:
    def __init__(self, license, model, color):
        self.license = license
        self.model = model
        self.color = color
    def __repr__(self):
        return f"{self.license},{self.model},{self.color}"

class Garage:
    def __init__(self):
        self.car_added = []
        self.spot = 10
        self.car_infos = {}
    
    def spots_available(self):
        return f"Total Spots Available {self.spot}"
    
    def add_car_to_garage(self, car):
# A1 : {}
        self.spot_name = ['A1', 'B1', 'C1', 'D1', 'E1', 'F1', 'G1', 'H1', 'I1', 'J1']
        if self.spot > 0:
            user_data = str(car).split(',')
            self.spot -=1
            self.car_added.append(user_data) 
            self.car_infos = {'Tickets' : [], 'License' : [], 'Model' : [],'Color' : []}
            ticket = ""
            
            for i, val in enumerate(self.car_added): # [[], [], [], [], []]
                ticket = self.spot_name[i] + val[0]
                self.car_infos['Tickets'].append(ticket)
                self.car_infos['License'].append(val[0])
                self.car_infos['Model'].append(val[1])
                self.car_infos['Color'].append(val[2])
            print(f"Successfully Parked!!! YOUR TICKET {ticket}")
        else:
            print("NO SPOTS AVAILABLE!!!!!!")
    
    def unpark(self, ticket, hours):
        if ticket not in self.car_infos['Tickets']: # security check purpose O(N)
            print("NO CAR FOUND!!!!!!!")
            return
        else:
            for i, val in enumerate(self.car_infos['Tickets']): #O(N)
                if val == ticket:
                    print(i)
                    print(f"YOUR LICENSE IS {self.car_infos['License'][i]}")
                    print(f"YOUR MODEL IS {self.car_infos['Model'][i]}")
                    print(f"YOUR COLOR IS {self.car_infos['Color'][i]}")
                    self.car_infos['License'].pop(i)
                    self.car_infos['Model'].pop(i)
                    self.car_infos['Color'].pop(i)
                    self.car_infos['Tickets'].pop(i)
                    self.spot += 1
        if hours > 30:
            print(f"Total Bill = ${hours*5 + 100}")
        else:
            print(f"Total Bill = ${hours*5}")
    def total_cars_in_garage(self):
        for i in self.car_infos.items():
            print(i)
    
my_garage = Garage()

print("****************WELCOME TO OUR PARKING SYSTEM**************")

while True:
    print("What do you want ? ")
    print("1. Park your Car \n2. Check Available Space \n3. Unpark Your Car \n4. Total Cars in Garage")
    user_choice = int(input("Enter you choice : "))
    if user_choice == 1:
        car_license = input("Enter your car license : ")
        car_model = input("Enter your car model : ")
        car_color = input("Enter your car color : ")
        user_car = Car(car_license, car_model, car_color) # Car class object
        my_garage.add_car_to_garage(user_car)
        print()
    elif user_choice == 2:
        print(my_garage.spots_available())
        print()
    elif user_choice == 3:
        ticket = input("Enter your ticket number : ")
        hours  = int(input("Enter hours : "))
        if my_garage.spot == 10:
            continue
        else:
            my_garage.unpark(ticket, hours)
        print()
    elif user_choice == 4:
        my_garage.total_cars_in_garage()
    else:
        break