old_contents: import sys
  import os
  
  from jinja2 import Template
  from jinja2.runtime import Context
  
  from django.core.management.base import BaseCommand, CommandError
  from polls.models import Poll
  
  class Command(BaseCommand):
      help = 'Generate initial nginx config'
  
      def add_arguments(self, parser):
          parser.add_argument('source_template', nargs='+')
          parser.add_argument('nginx destination', nargs='+')
  
      def handle(self, *args, **options):
          raise NotImplementedError
          context = {
              'ip_addr': os.environ.get('IP_ADDR', ''),
              'hostname': os.environ.get('HOSTNAME', ''),
              'root_port': os.environ.get('ROOT_PORT', ''),
              'containers': []
          }
          with open(args[0], 'r') as f:
              template_text = f.read()
              template = Template(template_text, trim_blocks = True, lstrip_blocks = True)
              nginx_config = template.render(**context)
  
          with open(args[1], 'w') as f:
              f.write(nginx_config)
              f.flush() 
  
new_contents: import sys
  import os
  
  from jinja2 import Template
  from jinja2.runtime import Context
  
  from django.core.management.base import BaseCommand, CommandError
  
  class Command(BaseCommand):
      help = 'Generate initial nginx config'
  
      def add_arguments(self, parser):
          parser.add_argument('source_template', nargs='+')
          parser.add_argument('nginx destination', nargs='+')
  
      def handle(self, *args, **options):
          raise NotImplementedError
          context = {
              'ip_addr': os.environ.get('IP_ADDR', ''),
              'hostname': os.environ.get('HOSTNAME', ''),
              'root_port': os.environ.get('ROOT_PORT', ''),
              'containers': []
          }
          with open(args[0], 'r') as f:
              template_text = f.read()
              template = Template(template_text, trim_blocks = True, lstrip_blocks = True)
              nginx_config = template.render(**context)
  
          with open(args[1], 'w') as f:
              f.write(nginx_config)
              f.flush() 
  
subject: remove extraneous model import.