Merge pull request 'SW3-classes-ii' (#4) from SW3-classes-ii into master

Reviewed-on: #4

src/class/dog.py

@@ -1,16 +1,15 @@
-class Dog:
+from abc import ABC, abstractmethod
+
+
+class Dog(ABC):
     amount_of_dogs = 0
     name: str
-    race: str
     age: int
     weight: float
     bark_sound: str
 
-    def __init__(
-        self, name: str, race: str, age: int, weight: float, bark_sound: str
-    ) -> None:
+    def __init__(self, name: str, age: int, weight: float, bark_sound: str) -> None:
         self.name = name
-        self.race = race
         self.age = age
         self.weight = weight
         self.bark_sound = bark_sound
@@ -18,10 +17,11 @@ class Dog:
         Dog.amount_of_dogs += 1
 
     def __str__(self):
-        return f"{self.name} is a {self.age} year old {self.race}"
+        return f"{self.name} is a {self.age} year old {self.__class__.__name__}"
 
+    @abstractmethod
     def bark(self, times: int = 1) -> str:
-        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
+        pass
 
     def birthday(self) -> str:
         self.age += 1
@@ -30,21 +30,35 @@ class Dog:
     def is_puppy(self) -> bool:
         return self.age < 2
 
+    def __eq__(self, other):
+        return self.name == other.name
+
 
 class Shepperd(Dog):
-    race: str = "shepperd"
     bark_sound: str = "Woo!"
 
     def __init__(self, name: str, age: int, weight: float) -> None:
-        Dog.__init__(self, name, Shepperd.race, age, weight, Shepperd.bark_sound)
+        Dog.__init__(self, name, age, weight, Shepperd.bark_sound)
+
+    def bark(self, times: int = 1) -> str:
+        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
 
 
 class Poodle(Dog):
-    race: str = "poodle"
     bark_sound: str = "Wow!"
 
     def __init__(self, name: str, age: int, weight: float) -> None:
-        Dog.__init__(self, name, Poodle.race, age, weight, Poodle.bark_sound)
+        Dog.__init__(self, name, age, weight, Poodle.bark_sound)
+
+    def bark(self, times: int = 1) -> str:
+        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
+
+
+class Bulldog(Dog):
+    bark_sound: str = "WUUUU!"
+
+    def __init__(self, name: str, age: int, weight: float) -> None:
+        Dog.__init__(self, name, age, weight, Bulldog.bark_sound)
 
 
 dog1 = Shepperd("Bello", 5, 22.5)
@@ -53,7 +67,8 @@ print(dog1.bark())
 print(dog1.birthday())
 print(Dog.amount_of_dogs)
 
-dog2 = Poodle("Barky", 10, 20)
+dog2 = Poodle("Bello", 10, 20)
 print(dog2.bark(3))
 print(dog2.is_puppy())
 print(Dog.amount_of_dogs)
+print(dog2 == dog1)

src/class/inheritance.py

@@ -0,0 +1,114 @@
+from abc import ABC, abstractmethod
+
+
+class Speaker(ABC):
+    @abstractmethod
+    def speak(self):
+        pass
+
+
+class Sleeper(ABC):
+    @abstractmethod
+    def sleep(self):
+        pass
+
+
+class Dog(Speaker, Sleeper):
+    def speak(self):
+        print("Wau")
+
+    def sleep(self):
+        print("Zzzzz")
+
+
+dog = Dog()
+dog.speak()
+dog.sleep()
+
+
+class Storage(ABC):
+    @abstractmethod
+    def save(self, key: str, value: str) -> None:
+        pass
+
+    @abstractmethod
+    def load(self, key: str) -> str:
+        pass
+
+
+class MemoryStorage(Storage):
+    def __init__(self):
+        self.storage = {}
+
+    def save(self, key: str, value: str) -> None:
+        self.storage.update({key: value})
+
+    def load(self, key: str) -> str:
+        return self.storage.get(key)
+
+
+storage: Storage = MemoryStorage()
+storage.save("key", "value")
+print(storage.load("key"))
+
+
+class Person:
+    def __init__(self, name: str):
+        self.name = name
+
+
+class Student(Person):
+    def __init__(self, name: str, semester: int):
+        super().__init__(name)
+        self.semester = semester
+
+
+s = Student("Mein Name", 3)
+print(s.name)
+print(s.semester)
+
+
+class A:
+    def ping(self) -> None:
+        print(" A ")
+
+
+class B(A):
+    def ping(self) -> None:
+        print(" B ")
+        super().ping()
+
+
+class C(A):
+    def ping(self) -> None:
+        print(" C ")
+        super().ping()
+
+
+class D(B, C):
+    pass
+
+
+D().ping()
+
+
+class Animal(ABC):
+    @abstractmethod
+    def speak(self):
+        return "..."
+
+    def chorus(self, n: int):
+        if n <= 0:
+            raise ValueError(" n muss positiv sein ")
+        return " ".join(self.speak() for _ in range(n))
+
+
+class Cat(Animal):
+    def speak(self):
+        return super().speak()
+
+    def chorus(self, n: int):
+        return super().chorus(n)
+
+
+print(Cat().chorus(3))

src/codewars/MenuDisplay.py

@@ -0,0 +1,37 @@
+class Menu:
+    def __init__(self, selects: list):
+        self.selects = selects
+        self.cursor = 0
+
+    def to_the_right(self):
+        self.cursor = (self.cursor + 1) % len(self.selects)
+
+    def to_the_left(self):
+        self.cursor = (self.cursor - 1) % len(self.selects)
+
+    def display(self):
+        return (
+            "["
+            + ", ".join(
+                [
+                    f"'{s}'" if i != self.cursor else f"['{s}']"
+                    for i, s in enumerate(self.selects)
+                ]
+            )
+            + "]"
+        )
+
+
+if __name__ == "__main__":
+    menu = Menu(["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"])
+
+    print(menu.display())
+    menu.to_the_right()
+    print(menu.display())
+    menu.to_the_left()
+    menu.to_the_left()
+    menu.to_the_left()
+    print(menu.display())
+    menu.to_the_left()
+    menu.to_the_left()
+    print(menu.display())

src/codewars/__main__.py

@@ -0,0 +1,4 @@
+from codewars.lastDigitOfHugeNumber import last_digit
+
+if __name__ == "__main__":
+    print(last_digit([1, 2, 3, 4, 5]))