solution

app/main.py

@@ -1,13 +1,20 @@
-# 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 app.models import Actor
+from app.managers import ActorManager
+
+if __name__ == "__main__":
+ Actor.objects = ActorManager()
+
+ # Create new actors
+ Actor.objects.create(first_name="Emma", last_name="Watson")
+ Actor.objects.create(first_name="Daniel", last_name="Radclife")
+
+ # Get all actors
+ print(Actor.objects.all())
+
+ # Update actor's data
+ Actor.objects.update(2, "Daniel", "Radcliffe")
+ print(Actor.objects.all())
+
+ # Delete an actor
+ Actor.objects.delete(1)
+ print(Actor.objects.all())

app/managers.py

@@ -0,0 +1,43 @@
+import sqlite3
+from typing import List
+from models import Actor
+
+
+class ActorManager:
+
+ def __init__(self) -> None:
+ # Connection to DB
+ self.connection = sqlite3.connect("сinema.sqlite")
+ self.cursor = self.connection.cursor()
+
+ def create(self, first_name: str, last_name: str) -> None:
+ # add new data
+ self.cursor.execute(
+ "INSERT INTO actors (first_name, last_name) VALUES (?, ?)",
+ (first_name, last_name)
+ )
+ self.connection.commit()
+
+ def all(self) -> List[Actor]:
+ # get all data
+ self.cursor.execute("SELECT * FROM actors")
+ records = self.cursor.fetchall()
+ return [Actor(id=row[0], first_name=row[1], last_name=row[2]) for row
+ in records]
+
+ def update(self, actor_id: int, first_name: str, last_name: str) -> None:
+ # update data
+ self.cursor.execute(
+ "UPDATE actors SET first_name=?, last_name=? WHERE id=?",
+ (first_name, last_name, actor_id)
+ )
+ self.connection.commit()
+
+ def delete(self, actor_id: int) -> None:
+ # delete data
+ self.cursor.execute("DELETE FROM actors WHERE id=?", (actor_id,))
+ self.connection.commit()
+
+ def __del__(self) -> None:
+ # Close connection with DB to deleting
+ 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