new_contents: # Generated by Django 2.1.4 on 2018-12-10 22:38
  
  from django.db import migrations
  from shapely.geometry import Polygon
  
  
  def fix_broken_spaces(apps, schema_editor):
      Space = apps.get_model('mapdata', 'Space')
      for space in Space.objects.all():
          geometry = space.geometry
          space.geometry = Polygon(shell=geometry.exterior)
          space.save()
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('mapdata', '0001_squashed_2018'),
      ]
  
      operations = [
          migrations.RunPython(fix_broken_spaces, migrations.RunPython.noop)
      ]
  
subject: fix space geometries broken by bug in editor