code: def update_file_status(self):
          
          nfiles = len(self.cache.keys())
          status_vect = np.zeros((6), int)
          sys.stdout.write("Updating status of %i files: " % nfiles)
          sys.stdout.flush()
          for i, key in enumerate(self.cache.keys()):
              if i % 200 == 0:
                  sys.stdout.write('.')
                  sys.stdout.flush()
              fhandle = self.cache[key]
              fhandle.check_status(self._base_path)
              fhandle.update_table_row(self._table, fhandle.key - 1)
              status_vect[fhandle.status] += 1
  
          sys.stdout.write("!\n")
          sys.stdout.flush()
          sys.stdout.write("Summary:\n")
          sys.stdout.write("  no_file:      %i\n" % status_vect[0])
          sys.stdout.write("  expected:     %i\n" % status_vect[1])
          sys.stdout.write("  exists:       %i\n" % status_vect[2])
          sys.stdout.write("  missing:      %i\n" % status_vect[3])
          sys.stdout.write("  superseded:   %i\n" % status_vect[4])
          sys.stdout.write("  temp_removed: %i\n" % status_vect[5])
docs: Update the status of all the files in the archive