Solution

.gitignore

@@ -7,3 +7,7 @@ venv/
 .pytest_cache/
 **__pycache__/
 **db.sqlite3
+*.db
+*.sqlite
+*.sqlite3
+*.db3

app/database_setup.py

@@ -0,0 +1,22 @@
+import sqlite3
+
+
+def setup_database() -> None:
+ connection = sqlite3.connect("cinema.db")
+ cursor = connection.cursor()
+
+ cursor.execute("""
+ CREATE TABLE IF NOT EXISTS actors (
+ id INTEGER PRIMARY KEY AUTOINCREMENT,
+ first_name TEXT NOT NULL,
+ last_name TEXT NOT NULL
+ );
+ """)
+
+ connection.commit()
+ connection.close()
+
+
+if __name__ == "__main__":
+ setup_database()
+ print("Database and actors table created.")

app/main.py

@@ -1,13 +1,29 @@
-# from models import Actor
-# from managers import ActorManager
-#
-# if __name__ == "__main__":
-# Actor.objects = ActorManager()
-#
-# Actor.objects.create(first_name="Emma", last_name="Watson")
-# Actor.objects.create(first_name="Daniel", last_name="Radclife")
-# print(Actor.objects.all())
-# Actor.objects.update(2, "Daniel", "Radcliffe")
-# print(Actor.objects.all())
-# Actor.objects.delete(1)
-# print(Actor.objects.all())
+from managers import ActorManager
+
+
+if __name__ == "__main__":
+ manager = ActorManager()
+
+ manager.create(first_name="Emma", last_name="Watson")
+ manager.create(first_name="Daniel", last_name="Radcliffe")
+
+ print("All actors after creation:")
+ actors = manager.all()
+ for actor in actors:
+ print(f"ID: {actor.id}, Name: {actor.first_name} {actor.last_name}")
+
+ print("\nUpdating actor with ID 2 (Daniel Radcliffe)...")
+ manager.update(2, "Daniel", "Radcliffe")
+
+ print("\nAll actors after update:")
+ actors = manager.all()
+ for actor in actors:
+ print(f"ID: {actor.id}, Name: {actor.first_name} {actor.last_name}")
+
+ print("\nDeleting actor with ID 1 (Emma Watson)...")
+ manager.delete(1)
+
+ print("\nAll actors after deletion:")
+ actors = manager.all()
+ for actor in actors:
+ print(f"ID: {actor.id}, Name: {actor.first_name} {actor.last_name}")

app/managers.py

@@ -0,0 +1,42 @@
+import sqlite3
+from models import Actor
+
+
+class ActorManager:
+ def __init__(self) -> None:
+ self.table_name = "actors"
+ self.connection = sqlite3.connect("cinema.db")
+ self.cursor = self.connection.cursor()
+
+ def create(self, first_name: str, last_name: str) -> Actor:
+ self.cursor.execute(
+ f"INSERT INTO {self.table_name} "
+ f"(first_name, last_name) VALUES (?, ?)",
+ (first_name, last_name)
+ )
+ self.connection.commit()
+ actor_id = self.cursor.lastrowid
+ return Actor(id=actor_id, first_name=first_name, last_name=last_name)
+
+ def all(self) -> list[Actor]:
+ self.cursor.execute(f"SELECT * FROM {self.table_name}")
+ rows = self.cursor.fetchall()
+ return [Actor(id=row[0], first_name=row[1],
+ last_name=row[2]) for row in rows]
+
+ def update(self, actor_id: int, first_name: str,
+ last_name: str) -> None:
+ self.cursor.execute(
+ f"UPDATE {self.table_name} SET first_name = ?, "
+ f" last_name = ? WHERE id = ?",
+ (first_name, last_name, actor_id)
+ )
+ self.connection.commit()
+
+ def delete(self, actor_id: int) -> None:
+ self.cursor.execute(f"DELETE FROM {self.table_name} WHERE id = ?",
+ (actor_id,))
+ self.connection.commit()
+
+ def __del__(self) -> None:
+ self.connection.close()

app/models.py

@@ -0,0 +1,8 @@
+from dataclasses import dataclass
+
+
+@dataclass
+class Actor:
+ id: int
+ first_name: str
+ last_name: str