homework.py

from typing import Dict
from typing import List
from typing import Tuple
from typing import Type


class InfoMessage:
    """Информационное сообщение о тренировке."""

    def __init__(self,
                 training_type: str,
                 duration: float,
                 distance: float,
                 speed: float,
                 calories: float,
                 ) -> None:
        self.training_type = training_type
        self.duration = duration
        self.distance = distance
        self.speed = speed

        self.calories = calories

    def get_message(self) -> str:
        return (
            f'Тип тренировки: {self.training_type};'
            f' Длительность: {self.duration:.3f} ч.;'
            f' Дистанция: {self.distance:.3f} км;'
            f' Ср. скорость: {self.speed:.3f} км/ч;'
            f' Потрачено ккал: {self.calories:.3f}.')


class Training:
    """Базовый класс тренировки."""

    LEN_STEP = 0.65
    M_IN_KM = 1000
    MIN_IN_H = 60
    KMH_IN_MSEC = 0.278
    CM_IN_M = 100

    def __init__(self,
                 action: int,
                 duration: float,
                 weight: float
                 ) -> None:
        self.action = action
        self.duration = duration
        self.weight = weight

    def get_distance(self) -> float:
        """Получить дистанцию в км."""
        return self.action * self.LEN_STEP / self.M_IN_KM

    def get_mean_speed(self) -> float:
        """Получить среднюю скорость движения."""
        return self.get_distance() / self.duration

    def get_spent_calories(self) -> float:
        """Получить количество затраченных калорий."""
    pass

    def show_training_info(self) -> InfoMessage:
        """Вернуть информационное сообщение о выполненной тренировке."""
        return InfoMessage(self.__class__.__name__,
                           self.duration,
                           self.get_distance(),
                           self.get_mean_speed(),
                           self.get_spent_calories()
                           )


class Running(Training):
    """Тренировка: бег."""

    CALORIES_MEAN_SPEED_SHIFT = 1.79
    CALORIES_MEAN_SPEED_MULTIPLIER = 18

    def get_spent_calories(self) -> float:
        """Получить количество затраченных калорий."""
        return ((self.CALORIES_MEAN_SPEED_MULTIPLIER * self.get_mean_speed()
                + self.CALORIES_MEAN_SPEED_SHIFT)
                * self.weight / self.M_IN_KM * self.duration * self.MIN_IN_H)


class SportsWalking(Training):
    """Тренировка: спортивная ходьба."""

    CALORIES_SPEED_HEIGHT_MULTIPLIER = 0.029
    CALORIES_WEIGHT_MULTIPLIER = 0.035

    def __init__(self,
                 action: int,
                 duration: float,
                 weight: float,
                 height: float,
                 ) -> None:
        super().__init__(action, duration, weight)
        self.height = height

    def get_spent_calories(self) -> float:
        """Получить количество затраченных калорий."""
        return ((self.CALORIES_WEIGHT_MULTIPLIER * self.weight
                + ((self.get_mean_speed() * self.KMH_IN_MSEC)**2
                   / (self.height / self.CM_IN_M))
                * self.CALORIES_SPEED_HEIGHT_MULTIPLIER * self.weight)
                * self.duration * self.MIN_IN_H)


class Swimming(Training):
    """Тренировка: плавание."""

    LEN_STEP = 1.38
    CALORIES_MEAN_SPEED_SHIFT = 1.1
    CALORIES_WEIGHT_MULTIPLIER = 2

    def __init__(self,
                 action: int,
                 duration: float,
                 weight: float,
                 length_pool: float,
                 count_pool: float
                 ) -> None:
        super().__init__(action, duration, weight)
        self.length_pool = length_pool
        self.count_pool = count_pool

    def get_mean_speed(self) -> float:
        """Получить среднюю скорость."""
        return (self.length_pool * self.count_pool
                / self.M_IN_KM / self.duration)

    def get_spent_calories(self) -> float:
        """Получить количество затраченных калорий."""
        return ((self.get_mean_speed() + self.CALORIES_MEAN_SPEED_SHIFT)
                * self.CALORIES_WEIGHT_MULTIPLIER
                * self.weight * self.duration)


def read_package(workout_type: str,
                 data: List[Tuple[str, int]]
                 ) -> Training:
    """Прочитать данные полученные от датчиков."""
    datas: Dict[str, Type[Training]] = {
        'SWM': Swimming,
        'RUN': Running,
        'WLK': SportsWalking
    }
    return datas[workout_type](*data)


def main(training: Training) -> None:
    """Главная функция."""
    info = training.show_training_info()
    print(info.get_message())


if __name__ == '__main__':
    packages = [
        ('SWM', [720, 1, 80, 25, 40]),
        ('RUN', [15000, 1, 75]),
        ('WLK', [9000, 1, 75, 180]),
        ('INVALID_TYPE', []),
    ]

    for workout_type, data in packages:
        try:
            training = read_package(workout_type, data)
            main(training)
        except KeyError:
            print('Пожалуйста, выберите тренировку из списка доступных.')