Solution

.flake8

@@ -6,5 +6,5 @@ max-complexity = 18
 select = B,C,E,F,W,T4,B9,ANN,Q0,N8,VNE
 exclude =
  **migrations
- venv
+ .venv
  tests

db/models.py

@@ -1,8 +1,7 @@
 from django.contrib.auth.models import User, AbstractUser
-from django.contrib.sitemaps.views import index
 from django.core.exceptions import ValidationError
 from django.db import models
-from django.forms import IntegerField
+
 
 import settings
 
@@ -60,16 +59,19 @@ def __str__(self) -> str:
 
 class Order(models.Model):
  created_at = models.DateTimeField(auto_now_add=True)
- user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="orders")
-
+ user = models.ForeignKey(
+ settings.AUTH_USER_MODEL,
+ on_delete=models.CASCADE,
+ related_name="orders"
+ )
 
  class Meta:
  ordering = ["-created_at"]
 
-
  def __str__(self) -> str:
  return f"{self.created_at}"
 
+
 class Ticket(models.Model):
  row = models.IntegerField()
  seat = models.IntegerField()
@@ -99,25 +101,29 @@ class Meta:
  )
  ]
 
- def clean(self):
+ def clean(self) -> None:
  if not (1 <= self.row <= self.movie_session.cinema_hall.rows):
  raise ValidationError(
  {
- "row":
- f"row number must be in available range: (1, rows): "
- f"(1, {self.movie_session.cinema_hall.rows})"
- }
+ "row": (
+ f"row number must be in available range: "
+ f"(1, rows): "
+ f"(1, {self.movie_session.cinema_hall.rows})"
+ )
+ }
  )
  if not (1 <= self.seat <= self.movie_session.cinema_hall.seats_in_row):
  raise ValidationError(
  {
- "seat": f"seat number must be in available range: "
- f"(1, seats_in_row): "
- f"(1, {self.movie_session.cinema_hall.seats_in_row})"
- }
+ "seat": (
+ f"seat number must be in available range: "
+ f"(1, seats_in_row): "
+ f"(1, {self.movie_session.cinema_hall.seats_in_row})"
+ )
+ }
  )
 
- def save(self, *args, **kwargs):
+ def save(self, *args, **kwargs) -> None:
  self.full_clean()
  super().save(*args, **kwargs)
 

services/order.py

@@ -8,18 +8,26 @@
 
 
 @transaction.atomic
-def create_order(tickets: list[dict], username: str, date: str = None) -> Order:
+def create_order(
+ tickets: list[dict],
+ username: str,
+ date: str = None
+) -> Order:
  user = User.objects.get(username=username)
  if date:
- created_at = timezone.make_aware(datetime.strptime(date, "%Y-%m-%d %H:%M"))
+ created_at = timezone.make_aware(
+ datetime.strptime(date, "%Y-%m-%d %H:%M")
+ )
 
  else:
  created_at = timezone.now()
 
  order = Order.objects.create(user=user, created_at=created_at)
 
  for ticket_data in tickets:
- movie_session = MovieSession.objects.get(id=ticket_data["movie_session"])
+ movie_session = MovieSession.objects.get(
+ id=ticket_data["movie_session"]
+ )
  Ticket.objects.create(
  order=order,
  movie_session=movie_session,

settings.py

@@ -30,4 +30,4 @@
  "django.contrib.contenttypes",
 ]
 
-AUTH_USER_MODEL = "db.User"
+AUTH_USER_MODEL = "db.User"