Solution

app/cinema/bar.py

@@ -0,0 +1,7 @@
+from app.people.customer import Customer
+
+
+class CinemaBar:
+    @staticmethod
+    def sell_product(customer: Customer, product: str) -> None:
+        print(f"Cinema bar sold {product} to {customer.name}.")

app/cinema/hall.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+import app.people.customer
+import app.people.cinema_staff
+
+
+class CinemaHall:
+    def __init__(self, number: int) -> None:
+        self.number = number
+
+    def movie_session(self,
+                      movie_name: str,
+                      customers: list,
+                      cleaning_staff: app.people.cinema_staff.Cleaner) -> None:
+
+        print(f'"{movie_name}" started in hall number {self.number}.')
+        for customer in customers:
+            customer.watch_movie(movie_name)
+
+        print(f'"{movie_name}" ended.')
+        cleaning_staff.clean_hall(self.number)

app/main.py

@@ -1,6 +1,16 @@
-# write your imports here
+from app.cinema.hall import CinemaHall
+from app.cinema.bar import CinemaBar
+from app.people.customer import Customer
+from app.people.cinema_staff import Cleaner
 
 
-def cinema_visit(customers: list, hall_number: int, cleaner: str, movie: str):
-    # write you code here
-    pass
+def cinema_visit(customers: list,
+                 hall_number: int,
+                 cleaner: str,
+                 movie: str) -> None:
+    all_customers = [Customer(someone["name"], someone["food"])
+                     for someone in customers]
+    for someone in all_customers:
+        CinemaBar().sell_product(someone, someone.food)
+    cinema_hall = CinemaHall(hall_number)
+    cinema_hall.movie_session(movie, all_customers, Cleaner(cleaner))

app/people/cinema_staff.py

@@ -0,0 +1,6 @@
+class Cleaner:
+    def __init__(self, name: str) -> None:
+        self.name = name
+
+    def clean_hall(self, hall_number: int) -> None:
+        print(f"Cleaner {self.name} is cleaning hall number {hall_number}.")

app/people/customer.py

@@ -0,0 +1,7 @@
+class Customer:
+    def __init__(self, name: str, food: str) -> None:
+        self.name = name
+        self.food = food
+
+    def watch_movie(self, movie: str) -> None:
+        print(f'{self.name} is watching "{movie}".')