old_contents: from django.conf import settings
  from compressor.filters import CompilerFilter
  
  
  COMPRESS_AUTOPREFIXER_BINARY = "autoprefixer"
  COMPRESS_AUTOPREFIXER_ARGS = ""
  
  
  class AutoprefixerFilter(CompilerFilter):
      command = "{binary} {args}"
      options = (
          ("binary", settings.COMPRESS_AUTOPREFIXER_BINARY or COMPRESS_AUTOPREFIXER_BINARY),
          ("args", settings.COMPRESS_AUTOPREFIXER_ARGS or COMPRESS_AUTOPREFIXER_ARGS),
      )
  
new_contents: from django.conf import settings
  from compressor.filters import CompilerFilter
  
  
  COMPRESS_AUTOPREFIXER_BINARY = "autoprefixer"
  COMPRESS_AUTOPREFIXER_ARGS = ""
  
  
  class AutoprefixerFilter(CompilerFilter):
      command = "{binary} {args}"
      options = (
          ("binary", getattr(settings, "COMPRESS_AUTOPREFIXER_BINARY", COMPRESS_AUTOPREFIXER_BINARY)),
          ("args", getattr(settings, "COMPRESS_AUTOPREFIXER_ARGS", COMPRESS_AUTOPREFIXER_ARGS)),
      )
  
subject: use getattr to get settings