code: def find_template_source(name):
      
      for loader_path in settings.TEMPLATE_LOADERS:
          template_loader = loader.find_template_loader(loader_path)
          try:
              source, origin = template_loader.load_template_source(name)
          except TemplateDoesNotExist:
              continue
          break
      return source, origin
docs: Load the source code and origin of the first template that matches the
      given name.