logistic_service.py

class LogisticService:
  def is_serviceable(self, postal_code) -> bool:
    mn, mx = self.get_postal_code_range()
    if mn <= postal_code <= mx:
      return True
    return False
  
  @abstractmethod
  def get_postal_code_range(self) -> Tuple(int, int):
    pass
  
  @abstractmethod
  def make_shipping_request(self, order):
    pass
  
  
class DoneTodayLogisticService(LogisticService):
  def get_postal_code_range(self):
    return (690034, 695000)
  
  def make_shipping_request(self, order):
    # make http requests
    
    
logistic_services = [DoneTodayLogisticService()]

def assign_logistic_service(order):
  for logistic in logistic_services:
    if logistic.is_serviceable(order.postal_code):
      logistic.make_shipping_request()
      return logistic.__class__.__name__