Question

Create a python program based on the following requirements the program should also have to have the following Base Class - Car (Make, Model, year) Sub Class - Gas (Make, Model, year, and gas per mile) Sub Class - Electric (Make, Model, year, and Full Battery charged per mile) 1. Add car 2. View car 3. Delete car 4. Exit program 1. The Car sell manager Application will need to store the car information for gas-powered car members and electric-powered car in text files called gas.txt and electric.txt respectively. 2. Add Car- After the user selects this option, they should have a second option to select whether to add the car options for a Gas-powered or Electric powered. The appropriate sub-class should then be instantiated. So, the user can enter make, model, year, cost, and in how many gallon the car will And the program will store the information in appropriate txt file. 5. View Car - This functionality should show all of the car listed in the user's car book. It should even show cars when the program starts by reading them from the file. Use of exception handling. Your program should attempt to catch most of the common exceptions Use of a list, tuple, or dictionary to store data Use of a loop of your choice Use of a decision structure

Answer 1

Program

import sys

""" A class that can be used to represent a car"""
class Car:
"""A simple attempt to represent a car."""

def __init__(self, make, model, year):
"""Initialize attributes for a car."""
self.make = make
self.model = model
self.year = year

def __str__(self):
return self.make + " " + self.model + " " + str(self.year)

def __repr__(self):
return "\nMake: " + self.make + "\nModel: " + self.model + "\nYear: " + str(self.year)

class GasCar(Car):
""" A car thats runs on gas """

def __init__(self, make, model, year, gas_per_mile):
super().__init__(make, model, year)
self.gas_per_mile = gas_per_mile

def __str__(self):
return super().__str__() + " " + str(self.gas_per_mile) + "\n"

def __repr__(self):
return super().__repr__() + "\nGas per mile: " + str(self.gas_per_mile)

class ElectricCar(Car):
""" A car that runs on electric power """

def __init__(self, make, model, year, battery_per_mile):
super().__init__(make, model, year)
self.battery_per_mile = battery_per_mile

def __str__(self):
return super().__str__() + " " + str(self.battery_per_mile) + "\n"

def __repr__(self):
return super().__repr__() + "\nBattery per mile: " + str(self.battery_per_mile)

def read_electric_cars():
""" function to read electric car from the file electric.txt """
with open("electric.txt") as file:
for line in file.readlines():
car_make, car_model, car_year, car_battery_per_mile = line.strip(
'\n').split()
cars.append(ElectricCar(
car_make, car_model, car_year, car_battery_per_mile))

def read_gas_cars():
""" method to read gas car from the file gas.txt """
with open("gas.txt") as file:
for line in file.readlines():
car_make, car_model, car_year, car_gas_per_mile = line.strip(
'\n').split()
cars.append(GasCar(car_make, car_model,
car_year, car_gas_per_mile))

def write_electric_cars():
with open("electric.txt", 'w') as file:
for car in cars:
if isinstance(car, ElectricCar):
file.write(car.__str__())

def write_gas_car(gas_car):
with open("gas.txt", 'a') as file:
for car in cars:
if isinstance(car, gas_car):
file.write(car.__str__())

# car sell manger application
cars = []

def add_car():
""" function to add a new car """

try:
print("\nSelect the type of car\n1. Gas-powered\n2. Electric-powered\n")
car_type = int(
input("Enter your choice: "))

if(car_type == 1):

# read data from the user
car_make = str(input("\nEnter the make of the car: "))
car_model = str(input("Enter the model of the car: "))
car_year = int(input("Enter the year of the car: "))
car_gas_per_mile = int(input("Enter the gas consumed for mile: "))

# create car object and append to cars list
gas_car = GasCar(car_make, car_model, car_year, car_gas_per_mile)
cars.append(gas_car)

elif(car_type == 2):

# read data from the user
car_make = str(input("\nEnter the make of the car: "))
car_model = str(input("Enter the model of the car: "))
car_year = int(input("Enter the year of the car: "))
car_battery_per_mile = int(
input("Enter the battery consumed for mile: "))

# create car object and append to cars list
electric_car = ElectricCar(
car_make, car_model, car_year, car_battery_per_mile)
cars.append(electric_car)
else:
print("Invalid entry")

# exception handling
except ValueError:
print("Value should be an integer")

except:
print("Something went wrong")

def delete_car():
""" function to delete an existing car """

for index in range(len(cars)):
print("Index:", index)
print(cars[index])

try:
index_to_delete = int(input("Enter the index of the car to delete: "))
cars.remove(index_to_delete)

except ValueError:
print("Invalid Index value")

except:
print("Something went wrong")

def view_car():
""" function to display all cars in the user's car book """
print("Cars in the user's car book")
for car in cars:
print(car)

def car_manager_application():

try:
# read the cars in the file
read_electric_cars()
read_gas_cars()

print("*** Car Manager Application ***")
while(True):

# print menu
print("\nSelect an option from the menu")
print("1. Add car")
print("2. View car")
print("3. Delete car")
print("4. Exit program")

choice = int(input("Enter your choice: "))

if(choice == 1):
add_car()

elif(choice == 2):
view_car()

elif(choice == 3):
delete_car()

elif(choice == 4):

# write the cars to the respective files
write_electric_cars()
write_gas_car()
sys.exit(1)

else:
print("Please enter a valid choice")
except ValueError:
print("Value should be an integer")

except:
print("Something went wrong")

if __name__ == "__main__":
car_manager_application()

import sys ** A class that can be used to represent a car" class Car: *A simple attempt to represent a car."** def __init__(self, make, model, year): Initialize attributes for a car." self.make = make self.model = model self-year = year def _str_(self): return self.make + " " + self.model + " " + str(self-year) def _repr_(self): return "\nMake: " + self.make + "\nModel: " + self.model + "\nYear: " + str(self-year) class GasCar(Car): " A car thats runs on gas ***** definit_(self, make, model, year, gas_per_mile): super() . _init__(make, model, year) self-gas_per_mile = gas_per_mile def _str_(self): return super()._str_() + " " + str(self.gas_per_mile) + "\n", def _repr__(self): return super(). __repr_() + "\nGas per mile: " + str(self.gas_per_mile) class ElectricCar (Car): " A car that runs on electric power ***** def __init__(self, make, model, year, battery_per_mile): super()_init_(make, model, year) self.battery_per_mile = battery_per_mile def _str_(self): return super()._str_() + " " + str(self.battery_per_mile) + "\n", def _repr_(self): return super() _repr_() + "\nBattery per mile: " + str(self.battery_per_mile) def read electric cars(): "*" function to read electric car from the file electric.txt"** with open("electric.txt") as file: for line in file.readlines(): car_make, car_model, car_year, car_battery_per_mile = line.strip '\n').split() cars.append(ElectricCar car_make, car_model, car_year, car_battery_per_mile)

def read_gas_cars(): ***" method to read gas car from the file gas.txt"** with open("gas.txt") as file: for line in file.readlines(): car_make, car_model, car_year, car_gas_per_mile = line.strip '\n').split() cars.append(GasCar(car_make, car_model, _ car_year, car_gas_per_mile)) 68 def write_electric_cars(): with open("electric.txt", 'w') as file: for car in cars: if isinstance(car, ElectricCar): file.write(car._str_o) 75 def write_gas_car(gas_car): with open("gas.txt", 'a') as file: for car in cars: if isinstance(car, gas_car): file.write(car._str_o) 82 # car sell manger application cars = [] def add_car(): "**" function to add a new car ***** try: print("\nSelect the type of car\n1. Gas-powered\n2. Electric-powered\n"), car_type = int( input("Enter your choice: ")) if(car_type == 1): # read data from the user car make = str(input("\nEnter the make of the car: ")) car_model = str(input("Enter the model of the car: ")); car year = int(input("Enter the year of the car: "); car gas per_mile = int(input("Enter the gas consumed for mile: ")) 99 100 101 102 103 # create car object and append to cars list gas_car = GasCar(car_make, car_model, car_year, car_gasper_mile) cars.append(gas_car) elif(car_type == 2): 104 105 106 107 108 109 110 # read data from the user car make = str(input("\nEnter the make of the car: ")) car model = str(input("Enter the model of the car: "))

111 112 car year = int(input("Enter the year of the car: "> car_battery_per_mile = int( input("Enter the battery consumed for mile: ")) 113 114 115 116 117 118 119 120 121 122 # create car object and append to cars list electric car = ElectricCar car_make, car_model, car year, car_battery_per_mile) cars.append(electric_car) else: print("Invalid entry") 123 # exception handling except ValueError: print("Value should be an integer") 124 125 126 127 128 except: print("Something went wrong") 129 def delete_car(): "*" function to delete an existing car ** wn for index in range(len(cars)): print("Index:", index) print(cars[index]) loco o try: index to delete = int(input("Enter the index of the car to delete: ") cars.remove(index_to_delete) 140 141 except ValueError: print("Invalid Index value") except: print("Something went wrong") 142 143 144 145 146 147 148 149 150 151 152 153 154 155 def view_car(): *" function to display all cars in the user's car book ****** print("Cars in the user's car book") for car in cars: print(car) def car_manager_application(): 156 157 158 159 try: # read the cars in the file read_electric_cars() read gas cars 160 161 162 163 print("*** Car Manager Application ***") while(True): 164

165 166 167 168 169 170 171 172 # print menu print("\nSelect an option from the menu") print("1. Add car") print("2. View car") print("3. Delete car") print("4. Exit program") choice = int(input("Enter your choice: ")) if(choice == 1): add_car() o A elif (choice == 2): view_car() elif (choice == 3): delete_car() CCO elif (choice == 4): Coco 185 186 187 # write the cars to the respective files write_electric cars() write_gas_car() sys.exit(1) 189 else: print("Please enter a valid choice") except ValueError: print("Value should be an integer") except: print("Something went wrong") 197 198 199 200 if _name__ == "_main_": car_manager_application()

OUTPUT

*** Car Manager Application ***

Select an option from the menu
1. Add car
2. View car
3. Delete car
4. Exit program
Enter your choice: 1

Select the type of car
1. Gas-powered
2. Electric-powered

Enter your choice: 1

Enter the make of the car: Audi
Enter the model of the car: R8
Enter the year of the car: 2019
Enter the gas consumed for mile: 1

Select an option from the menu
1. Add car
2. View car
3. Delete car
4. Exit program
Enter your choice: 1

Select the type of car
1. Gas-powered
2. Electric-powered

Enter your choice: 2

Enter the make of the car: Tesla
Enter the model of the car: Roadster
Enter the year of the car: 2019
Enter the battery consumed for mile: 2

*** Car Manager Application *** Select an option from the menu 1. Add car 2. View car 3. Delete car 4. Exit program Enter your choice: 1 Select the type of car 1. Gas-powered 2. Electric-powered Enter your choice: 1 Enter the make of the car: Audi Enter the model of the car: R8 Enter the year of the car: 2019 Enter the gas consumed for mile: 1 Select an option from the menu 1. Add car 2. View car 3. Delete car 4. Exit program Enter your choice: 1 Select the type of car 1. Gas-powered 2. Electric-powered Enter your choice: 2 Enter the make of the car: Tesla, Enter the model of the car: Roadster Enter the year of the car: 2019 Enter the battery consumed for mile: 2

Hope this helps!

Please let me know if any changes needed.

Thank you!

I hope you're safe during the pandemic.