def import_process(file_name):
cars = {}
departments = {}
department_names = []
registration_numbers = []
errors = []
file = default_storage.open(file_name)
decoded_file = file.read().decode("utf-8").splitlines()
reader = csv.DictReader(decoded_file)
for row in reader:
car = Car(
registration_no=row["registration_no"],
brand=row["brand"],
model=row["model"],
weight=row["weight"],
production_date=row["production_date"],
passengers_no=row["passengers_no"],
)
car.department_name = row["department"]
department_names.append(row["department"])
registration_numbers.append(row["registration_no"])
cars[row["registration_no"]] = car
departments[row["registration_no"]] = row["department"]
if departments_errors := check_departments(department_names):
errors.append(departments_errors)
