In this tutorial, we'll create a simple vehicle appraisal app using Python. This app will take input about a vehicle's make, model, year, mileage, and condition, and then calculate an appraisal value based on this information.

Setting Up the Project

We'll start by defining a Vehicle class that represents a vehicle and includes methods to calculate its appraisal value.

class Vehicle:
    def __init__(self, make, model, year, mileage, condition):
        self.make = make
        self.model = model
        self.year = year
        self.mileage = mileage
        self.condition = condition

    def calculate_value(self):
        value = 10000  # Base value
        if self.condition == "excellent":
            value += 3000
        elif self.condition == "good":
            value += 2000
        elif self.condition == "fair":
            value += 1000

        mileage_deduction = max(0, (self.mileage - 100000) * 0.05)
        value -= mileage_deduction

        return value

Building the App

Now, let's create the main function to interact with the user and utilize the Vehicle class.

def main():
    print("Welcome to the Vehicle Appraisal App!")
    print("Please enter vehicle details.")

    make = input("Enter the make of the vehicle: ")
    model = input("Enter the model of the vehicle: ")
    year = int(input("Enter the year of the vehicle: "))
    mileage = int(input("Enter the mileage of the vehicle: "))
    condition = input("Enter the condition of the vehicle (excellent, good, fair): ")

    vehicle = Vehicle(make, model, year, mileage, condition)
    appraisal_value = vehicle.calculate_value()

    print("\nAppraisal Result:")
    print("Make:", vehicle.make)
    print("Model:", vehicle.model)
    print("Year:", vehicle.year)
    print("Mileage:", vehicle.mileage)
    print("Condition:", vehicle.condition)
    print("Appraisal Value: ${:,.2f}".format(appraisal_value))


if __name__ == "__main__":
    main()

Conclusion

That's it! You've just built a simple vehicle appraisal app in Python. This is a basic example, but you can expand it further by adding more features such as a graphical user interface or integrating it with a database for storing vehicle information.

Feel free to customize and enhance this app according to your needs. Happy coding!