code: def _read_buckets_cache_file(cache_file):
      '''
      Return the contents of the buckets cache file
      '''
  
      log.debug('Reading buckets cache file')
  
      with salt.utils.files.fopen(cache_file, 'rb') as fp_:
          try:
              data = pickle.load(fp_)
          except (pickle.UnpicklingError, AttributeError, EOFError, ImportError,
                  IndexError, KeyError):
              data = None
  
      return datf _read_buckets_cache_file(cache_file):
      '''
      Return the contents of the buckets cache file
      '''
  
      log.debug('Reading buckets cache file')
  
      with salt.utils.files.fopen(cache_file, 'rb') as fp_:
          try:
              data = pickle.load(fp_)
          except (pickle.UnpicklingError, AttributeError, EOFError, ImportError,
                  IndexError, KeyError):
              data = None
  
      return data
docs: Return the contents of the buckets cache file