old_contents: import logging
  
  from main.models import Station
  import csv
  
  
  def populate_stations(path='/opt/code/vvs_data/HaltestellenVVS_simplified_utf8_stationID.csv'):
      with open(path, 'r') as f:
          reader = csv.reader(f, delimiter=',')
          # skip first row
          next(reader, None)
          for row in reader:
              obj, created = Station.objects.update_or_create(
                  station_id=row[0],
                  name=row[1],
                  full_name=row[2])
  
              if created:
                  logging.info("Created station %s" % row[0])
              else:
                  logging.info("Updated station %s" % row[0])
  
new_contents: import logging
  
  from main.models import Station
  import csv
  
  
  def populate_stations(path='/opt/code/vvs_data/HaltestellenVVS_simplified_utf8_stationID.csv'):
      """
      parse simplified csv, add elements to database
      """
      with open(path, 'r') as f:
          reader = csv.reader(f, delimiter=',')
          # skip first row
          next(reader, None)
          for row in reader:
              obj, created = Station.objects.update_or_create(
                  station_id=row[0],
                  name=row[1],
                  full_name=row[2])
  
              if created:
                  logging.info("Created station %s" % row[0])
              else:
                  logging.info("Updated station %s" % row[0])
  
subject: add docstring