old_contents: from mgz.fast.header import decompress, parse_version
  from mgz.summary.full import FullSummary
  from mgz.model.compat import ModelSummary
  from mgz.util import Version
  import logging
  import zlib
  
  logger = logging.getLogger(__name__)
  
  class SummaryStub:
  
      def __call__(self, data, playback=None, fallback=False):
          try:
              header = decompress(data)
              version, game, save, log = parse_version(header, data)
              data.seek(0)
              supported = (version is Version.DE and save > 13.34) # or version is Version.USERPATCH15
              print(supported, fallback, supported and not fallback)
          except zlib.error:
              supported = False
          if supported and not fallback:
              logger.info("using model summary")
              try:
                  return ModelSummary(data, playback)
              except RuntimeError as e:
                  logger.warning(f"could not fast parse; falling back: {e}")
          logger.info("using full summary")
          return FullSummary(data, playback)
  
  
  Summary = SummaryStub()
  
new_contents: from mgz.fast.header import decompress, parse_version
  from mgz.summary.full import FullSummary
  from mgz.model.compat import ModelSummary
  from mgz.util import Version
  import logging
  import zlib
  
  logger = logging.getLogger(__name__)
  
  class SummaryStub:
  
      def __call__(self, data, playback=None, fallback=False):
          try:
              header = decompress(data)
              version, game, save, log = parse_version(header, data)
              data.seek(0)
              supported = (version is Version.DE and save > 13.34) # or version is Version.USERPATCH15
          except zlib.error:
              supported = False
          if supported and not fallback:
              logger.info("using model summary")
              try:
                  return ModelSummary(data, playback)
              except RuntimeError as e:
                  logger.warning(f"could not fast parse; falling back: {e}")
          logger.info("using full summary")
          return FullSummary(data, playback)
  
  
  Summary = SummaryStub()
  
subject: remove debug