text: from model import CSVModel
  from relations import HasOne, HasMany
  
  
  class City(CSVModel):
      city_name = ""
      id = ""
  
  class Person(CSVModel):
      first_name = ""
      last_name = ""
      id = "0"
      city = HasMany(City)
  
  
  
  if __name__ == "__main__":
      # Create a person
  
      """
      c = City()
      c.city_name = "Novi Sad"
      c.id = "1"
      c.save()
      """
  
      print Person.all()[0].city
  