Solution

.gitignore

@@ -7,3 +7,4 @@ venv/
 .pytest_cache/
 **__pycache__/
 **db.sqlite3
+**db.sqlite

app/managers.py

@@ -3,4 +3,38 @@
 from app.models import Actor
 
 
-# add manager here
+class ActorManager:
+    def __init__(self, db_name: str, table_name: str) -> None:
+        self.db_name = db_name
+        self.table_name = table_name
+        self._connection = sqlite3.connect(self.db_name)
+
+    def create(self, first_name: str, last_name: str) -> None:
+        self._connection.execute(
+            f"INSERT INTO {self.table_name} (first_name, last_name) "
+            f"VALUES (?, ?)",
+            (first_name, last_name),
+        )
+        self._connection.commit()
+
+    def all(self) -> list[Actor]:
+        actor_cursor = self._connection.execute(
+            f"SELECT * FROM {self.table_name}"
+        )
+        return [Actor(*row) for row in actor_cursor]
+
+    def update(self, pk: int, new_first_name: str, new_last_name: str) -> None:
+        self._connection.execute(
+            f"UPDATE {self.table_name} "
+            f"SET first_name=?, last_name=? "
+            f"WHERE id=? ",
+            (new_first_name, new_last_name, pk),
+        )
+        self._connection.commit()
+
+    def delete(self, pk: int) -> None:
+        self._connection.execute(
+            f"DELETE FROM {self.table_name} WHERE id=?",
+            (pk,)
+        )
+        self._connection.commit()

app/models.py

@@ -1,4 +1,8 @@
 from dataclasses import dataclass
 
 
-# add dataclass here
+@dataclass
+class Actor:
+    id: int
+    first_name: str
+    last_name: str