2.py - master - vladimir_p/practic3_python

2.py
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Vladimir P.
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26 окт 2025, 21:47
26 окт 2025, 21:47084c9a4
"""
Demonstrates polymorphism through a vehicle class hierarchy.
"""


class Vehicle:
    """A base class to represent a vehicle."""

    def __init__(self, brand: str, model: str, year: str) -> None:
        """
        Initializes a Vehicle object.

        Args:
            brand: The brand of the vehicle.
            model: The model of the vehicle.
            year: The manufacturing year of the vehicle.
        """
        self.brand = brand
        self.model = model
        self.year = year

    def __str__(self) -> str:
        """Returns the string representation of the vehicle."""
        return f"{self.brand} {self.model} {self.year}"


class Car(Vehicle):
    """Represents a car, inheriting from Vehicle."""

    def __init__(self, brand: str, model: str, year: str, max_speed: int) -> None:
        """
        Initializes a Car object.

        Args:
            brand: The brand of the car.
            model: The model of the car.
            year: The manufacturing year of the car.
            max_speed: The maximum speed in km/h.
        """
        super().__init__(brand, model, year)
        self.max_speed = max_speed

    def __str__(self) -> str:
        """Returns the string representation of the car, including its max speed."""
        return f"{self.brand} {self.model} {self.year}, max speed: {self.max_speed} km/h"


class Bus(Vehicle):
    """Represents a bus, inheriting from Vehicle."""

    def __init__(self, brand: str, model: str, year: str, seats: int) -> None:
        """
        Initializes a Bus object.

        Args:
            brand: The brand of the bus.
            model: The model of the bus.
            year: The manufacturing year of the bus.
            seats: The number of available seats.
        """
        super().__init__(brand, model, year)
        self.seats = seats

    def __str__(self) -> str:
        """Returns the string representation of the bus, including its seat count."""
        return f"{self.brand} {self.model} {self.year}, total seats available: {self.seats}"


class Bike(Vehicle):
    """Represents a bike, inheriting from Vehicle."""

    def __init__(self, brand: str, model: str, year: str, acceleration: float) -> None:
        """
        Initializes a Bike object.

        Args:
            brand: The brand of the bike.
            model: The model of the bike.
            year: The manufacturing year of the bike.
            acceleration: The acceleration in m/s^2.
        """
        super().__init__(brand, model, year)
        self.acceleration = acceleration

    def __str__(self) -> str:
        """Returns the string representation of the bike, including its acceleration."""
        return f"{self.brand} {self.model} {self.year}, acceleration: {self.acceleration} m/s^2"


if __name__ == "__main__":
    car = Car("Toyota", "Camry", "2015", 250)
    bus = Bus("Volkswagen", "Transporter", "2000", 16)
    bike = Bike("Suzuki", "HAYABUSA", "2007", 9.26)

    print(car)
    print(bus)
    print(bike)