code: def swf2png(swf_path, png_path, swfrender_path="swfrender"):
      
      # Currently rely on swftools
      #
      # Would be great to have a native python dependency to convert swf into png or jpg.
      # However it seems that pyswf  isn't flawless. Some graphical elements (like the text!) are lost during
      # the export.
      try:
          cmd = [swfrender_path, swf_path, '-o', png_path]
          subprocess.check_output(cmd, stderr=subprocess.STDOUT)
      except subprocess.CalledProcessError as e:
          raise ConversionError("Failed to convert SWF file %s.\n"
                                "\tCommand: %s\n"
                                "\tExit status: %s.\n"
                                "\tOutput:\n%s"
                                % (swf_path, " ".join(cmd), e.returncode, e.output))
docs: Convert SWF slides into a PNG image
  
      Raises:
          OSError is raised if swfrender is not available.
          ConversionError is raised if image cannot be created.