old_contents: from django.http import HttpResponse
  import prometheus_client
  from BaseHTTPServer import HTTPServer
  import thread
  
  
  def SetupPrometheusEndpointOnPort(port, addr=''):
      """Exports Prometheus metrics on an HTTPServer running in its own thread.
  
      The server runs on the given port and is by default listenning on
      all interfaces. This HTTPServer is fully independent of Django and
      its stack. This offers the advantage that even if Django becomes
      unable to respond, the HTTPServer will continue to function and
      export metrics. However, this also means that none of the features
      offered by Django (like middlewares or WSGI) can't be used.
      """
      prometheus_client.start_http_server(port, addr=addr)
  
  
  def SetupPrometheusExports():
      """Exports metrics so Prometheus can collect them."""
      SetupPrometheusEndpointOnPort(8001)
  
  
  def ExportToDjangoView(request):
      """Exports /metrics as a Django view.
  
      You can use django_prometheus.urls to map /metrics to this view.
      """
      metrics_page = generate_latest()
      return HttpResponse(
          metrics_page,
          content_type=prometheus_client.CONTENT_TYPE_LATEST)
  
  
  # The prometheus exporter is global, so we initialize it once in the
  # global scope.
  SetupPrometheusExports()
  
new_contents: from django.http import HttpResponse
  import prometheus_client
  
  
  def SetupPrometheusEndpointOnPort(port, addr=''):
      """Exports Prometheus metrics on an HTTPServer running in its own thread.
  
      The server runs on the given port and is by default listenning on
      all interfaces. This HTTPServer is fully independent of Django and
      its stack. This offers the advantage that even if Django becomes
      unable to respond, the HTTPServer will continue to function and
      export metrics. However, this also means that none of the features
      offered by Django (like middlewares or WSGI) can't be used.
      """
      prometheus_client.start_http_server(port, addr=addr)
  
  
  def SetupPrometheusExports():
      """Exports metrics so Prometheus can collect them."""
      SetupPrometheusEndpointOnPort(8001)
  
  
  def ExportToDjangoView(request):
      """Exports /metrics as a Django view.
  
      You can use django_prometheus.urls to map /metrics to this view.
      """
      metrics_page = generate_latest()
      return HttpResponse(
          metrics_page,
          content_type=prometheus_client.CONTENT_TYPE_LATEST)
  
  
  # The prometheus exporter is global, so we initialize it once in the
  # global scope.
  SetupPrometheusExports()
  
subject: Remove unused imports in exports.py that were invalid in python3.