Solution

.flake8

@@ -4,4 +4,4 @@ ignore = E203, E266, W503, ANN002, ANN003, ANN101, ANN102, ANN401, N807, N818
 max-line-length = 79
 max-complexity = 18
 select = B,C,E,F,W,T4,B9,ANN,Q0,N8,VNE
-exclude = venv, tests
+exclude = venv, tests, .venv

app/main.py

@@ -1 +1,42 @@
-# write your code here
+class Animal:
+    alive = []
+
+    def __init__(self,
+                 name: str,
+                 health: int = 100) -> None:
+        self.name = name
+        self.health = health
+        self.hidden = False
+        Animal.alive.append(self)
+
+    def __repr__(self) -> str:
+        return (f"{{Name: {self.name}, "
+                f"Health: {self.health}, "
+                f"Hidden: {self.hidden}}}")
+
+    @classmethod
+    def remove_dead(cls) -> None:
+        cls.alive = [animal for animal in cls.alive if animal.health > 0]
+
+    @classmethod
+    def get_alive_repr(cls) -> str:
+        return str([repr(animal) for animal in cls.alive])
+
+    @classmethod
+    def get_alive(cls) -> list:
+        return cls.alive
+
+
+class Herbivore(Animal):
+    def hide(self) -> None:
+        self.hidden = not self.hidden
+
+
+class Carnivore(Animal):
+    @staticmethod
+    def bite(target: Animal) -> None:
+        if isinstance(target, Herbivore) and not target.hidden:
+            target.health -= 50
+            if target.health <= 0:
+                target.health = 0
+                Animal.alive.remove(target)