Solution

app/main.py

@@ -1,13 +1,14 @@
 # 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")
+# Actor.objects.update(1, "Daniel", "Radcliffe")
 # print(Actor.objects.all())
 # Actor.objects.delete(1)
 # print(Actor.objects.all())

app/managers.py

@@ -0,0 +1,49 @@
+import sqlite3
+
+from models import Actor
+
+
+class ActorManager:
+ def __init__(self) -> None:
+ self._connection = sqlite3.connect(
+ "C:/Users/Igor/PycharmProjects/"
+ "django ORM/py-actor-manager/cinema.sqlite"
+ )
+ self.table_name = "actors"
+
+ def create(self, first_name: str, last_name: str) -> None:
+ self._connection.execute(
+ f"INSERT INTO {self.table_name} (first_name, last_name)"
+ " VALUES (?, ?)",
+ (first_name, last_name,)
+ )
+ self._connection.commit()
+
+ def all(self) -> list:
+ actor_cursor = self._connection.execute(
+ f"SELECT * FROM {self.table_name}"
+ )
+
+ return [Actor(*row) for row in actor_cursor]
+
+ def update(
+ self,
+ id_to_update: int,
+ new_first_name: str,
+ new_last_name: str
+ ) -> None:
+ self._connection.execute(
+ f"UPDATE {self.table_name}"
+ " SET first_name = ?, last_name = ? "
+ "WHERE id = ?",
+ (new_first_name, new_last_name, id_to_update)
+ )
+ self._connection.commit()
+
+ def delete(self, id_to_delete: int) -> None:
+ self._connection.execute(
+ f"DELETE FROM {self.table_name} "
+ f"WHERE id = ?",
+ (id_to_delete,)
+ )
+ self._connection.commit()

app/models.py

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