new_contents: from distutils.version import StrictVersion
  
  from django.db import connection
  
  
  # NetBox v2.2 and later requires PostgreSQL 9.4 or higher
  with connection.cursor() as cursor:
      cursor.execute("SELECT VERSION()")
      row = cursor.fetchone()
      pg_version = row[0].split()[1]
      if StrictVersion(pg_version) < StrictVersion('9.4.0'):
          raise Exception("PostgreSQL 9.4.0 or higher is required. ({} found)".format(pg_version))
  
subject: Check that PostgreSQL is 9.4 or higher on initialization