solution

app/main.py

@@ -1 +1,16 @@
-# write your code here
+
+def calculate_team_total_rating(players: list) -> int:
+    result = 0
+    for player in players:
+        result += player.get_rating()
+    return result
+
+
+def elves_concert(elves: list) -> None:
+    for elf in elves:
+        elf.play_elf_song()
+
+
+def feast_of_the_dwarves(dwarfs: list) -> None:
+    for dwarf in dwarfs:
+        dwarf.eat_favourite_dish()

app/players/dwarves/dwarf.py

@@ -0,0 +1,13 @@
+from abc import ABC, abstractmethod
+
+from app.players.player import Player
+
+
+class Dwarf(Player, ABC):
+    def __init__(self, favourite_dish: str) -> None:
+        self.nickname = None
+        self._favourite_dish = favourite_dish
+
+    @abstractmethod
+    def eat_favourite_dish(self) -> None:
+        print(f"{self.nickname} is eating {self._favourite_dish}")

app/players/dwarves/dwarf_blacksmith.py

@@ -0,0 +1,19 @@
+from app.players.dwarves.dwarf import Dwarf
+
+
+class DwarfBlacksmith(Dwarf):
+    def __init__(self, nickname: str, skill_level: int,
+                 favourite_dish: str) -> None:
+        super().__init__(favourite_dish)
+        self._skill_level = skill_level
+        self._nickname = nickname
+
+    def player_info(self) -> str:
+        return (f"Dwarf blacksmith {self._nickname} with skill "
+                f"of the {self._skill_level} level")
+
+    def get_rating(self) -> int:
+        return self._skill_level
+
+    def eat_favourite_dish(self) -> None:
+        print(f"{self._nickname} is eating {self._favourite_dish}")

app/players/dwarves/dwarf_warrior.py

@@ -0,0 +1,19 @@
+from app.players.dwarves.dwarf import Dwarf
+
+
+class DwarfWarrior(Dwarf):
+    def __init__(self, nickname: str,
+                 hummer_level: int, favourite_dish: str) -> None:
+        super().__init__(favourite_dish)
+        self._hummer_level = hummer_level
+        self._nickname = nickname
+
+    def player_info(self) -> str:
+        return (f"Dwarf warrior {self._nickname}. {self._nickname} "
+                f"has a hummer of the {self._hummer_level} level")
+
+    def get_rating(self) -> int:
+        return self._hummer_level + 4
+
+    def eat_favourite_dish(self) -> None:
+        print(f"{self._nickname} is eating {self._favourite_dish}")

app/players/elves/druid.py

@@ -0,0 +1,20 @@
+from app.players.elves.elf import Elf
+
+
+class Druid(Elf):
+    def __init__(self, nickname: str, favourite_spell: str,
+                 musical_instrument: str) -> None:
+        super().__init__(musical_instrument)
+        self._favourite_spell = favourite_spell
+        self._nickname = nickname
+
+    def player_info(self) -> str:
+        return (f"Druid {self._nickname}. {self._nickname} has a"
+                f" favourite spell: {self._favourite_spell}")
+
+    def get_rating(self) -> int:
+        return len(self._favourite_spell)
+
+    def play_elf_song(self) -> None:
+        print(f"{self._nickname} is playing a song "
+              f"on the {self._musical_instrument}")

app/players/elves/elf.py

@@ -0,0 +1,14 @@
+from abc import ABC, abstractmethod
+
+from app.players.player import Player
+
+
+class Elf(Player, ABC):
+    def __init__(self, musical_instrument: str) -> None:
+        self.nickname = None
+        self._musical_instrument = musical_instrument
+
+    @abstractmethod
+    def play_elf_song(self) -> None:
+        print(f"{self.nickname} is playing a song "
+              f"on the {self._musical_instrument}")

app/players/elves/elf_ranger.py

@@ -0,0 +1,20 @@
+from app.players.elves.elf import Elf
+
+
+class ElfRanger(Elf):
+    def __init__(self, nickname: str, bow_level: int,
+                 musical_instrument: str) -> None:
+        super().__init__(musical_instrument)
+        self._bow_level = bow_level
+        self._nickname = nickname
+
+    def player_info(self) -> str:
+        return (f"Elf ranger {self._nickname}. {self._nickname} "
+                f"has bow of the {self._bow_level} level")
+
+    def get_rating(self) -> int:
+        return 3 * self._bow_level
+
+    def play_elf_song(self) -> None:
+        print(f"{self._nickname} is playing a "
+              f"song on the {self._musical_instrument}")

app/players/player.py

@@ -0,0 +1,13 @@
+from abc import ABC, abstractmethod
+
+
+class Player(ABC):
+    _nickname = ""
+
+    @abstractmethod
+    def get_rating(self) -> int:
+        pass
+
+    @abstractmethod
+    def player_info(self) -> str:
+        pass