Lesson 015

main.py

@@ -0,0 +1,170 @@
+from time import sleep
+
+
+class Cat():
+
+    def meow(self):
+        return "Meow"
+
+    def purring(self):
+        return "Pure"
+
+    def sleep(self):
+        return "I'm sleeping"
+
+
+class Good():
+    def __init__(self, name, price, weight) -> None:
+        self.name = name
+        self.price = price
+        self.weight = weight
+        self.calc()
+
+    def calc(self) -> None:
+        self.cost = self.price * self.weight
+
+    def __str__(self) -> str:
+        return f"{self.name} costs {self.cost} for {self.weight} KG"
+
+
+class Car():
+    color:          str
+    brand:          str
+    body:           str
+    speed:          float
+    transmission:   str
+    restrictions:   dict = {
+        "truck": 60.0,
+        "sedan": 80.0
+    }
+
+    def __init__(self, color: str, brand: str, body: str, speed: float, transmission: str) -> None:
+        self.color = color.lower()
+        self.brand = brand.lower()
+        self.body = body.lower()
+        self.transmission = transmission
+        if not self.__check_speed(speed):
+            self.speed = speed
+        else:
+            self.speed = self.restrictions[self.body]
+
+    def start(self) -> str:
+        return "Это мой последний заезд..."
+
+    def stop(self) -> str:
+        return "Это был мой последний заезд..."
+
+    def turn(self, side: str) -> str:
+        return f"Car is turned to the {side}"
+
+    def speed_up(self, value: float) -> str:
+        new_speed = self.speed + value
+        if self.__check_speed(new_speed):
+            return f"Speed hasn't been changed"
+
+        old_speed = self.speed
+        self.speed += value
+        return f"Speed has been changed: {old_speed} -> {self.speed}"
+
+    def speed_down(self, value: float) -> str:
+        old_speed = self.speed
+        self.speed -= value
+        return f"Speed has been changed: {old_speed} -> {self.speed}"
+
+    def beep(self) -> str:
+        return "Союз нерушимый республик свободных....."
+
+    def __check_speed(self, value: float):
+        restr_speed = self.restrictions[self.body]
+        if restr_speed < value:
+            self.speed = restr_speed
+            print(
+                f"Скорость превышена! Разрешенная скорость {restr_speed} км/ч. " +
+                f"Текущая скорость: {self.speed} км/ч")
+            return True
+        return False
+
+
+
+
+class TrafficLight:
+    colors: dict
+
+    def __init__(self) -> None:
+        self.colors = {
+            "green": 2.0,
+            "yellow": 0.5,
+            "red": 1.0
+        }
+
+    def switching(self) -> None:
+        for i in self.colors:
+            print(i)
+            sleep(self.colors[i])
+
+
+def task1():
+    cat = Cat()
+    cat.name = "Poker"
+    cat.color = "Black"
+    cat.age = 3
+    print(f"{cat.meow()}\n{cat.purring()}\n{cat.sleep()}")
+
+
+def task2():
+    cat = Cat()
+    cat.name = "Poker"
+    cat.color = "Black"
+    cat.age = 3
+    print(f"{cat.meow()}\n{cat.purring()}\n{cat.sleep()}")
+
+    apple = Good('apple', price=100, weight=1.5)
+    pear = Good('pear', price=120, weight=0.8)
+    print(apple)
+    print(pear)
+
+
+def task3():
+    car = Car("Black", "BMW", "Sedan", 135.0, "I dunno")
+    print(car.start())
+    print(car.turn("left"))
+    print(car.speed_up(150))
+    print(car.speed_down(50))
+    print(car.beep())
+    print(car.stop())
+    print('\n'*2)
+
+    truck = Car("Green", "Samsung", "Truck", 75.0, "Kinda Sorda box")
+    print(truck.start())
+    print(truck.turn("straight"))
+    print(truck.speed_up(12))
+    print(truck.speed_down(12))
+    print(truck.beep())
+    print(truck.stop())
+
+
+def task4():
+    car = Car("Black", "BMW", "Sedan", 135.0, "I dunno")
+    print(car.start())
+    print(car.turn("left"))
+    print(car.speed_up(150))
+    print(car.speed_down(50))
+    print(car.beep())
+    print(car.stop())
+    print('\n'*2)
+
+    truck = Car("Green", "Samsung", "Truck", 75.0, "Kinda Sorda box")
+    print(truck.start())
+    print(truck.turn("straight"))
+    print(truck.speed_up(12))
+    print(truck.speed_down(12))
+    print(truck.speed_up(1))
+    print(truck.beep())
+    print(truck.stop())
+
+
+def task5():
+    tl = TrafficLight()
+    while True:
+        tl.switching()
+        print()