code: def filter_tzfiles(name_list):
      
      for src_name in name_list:
          # pytz-2012j/pytz/zoneinfo/Indian/Christmas
          parts = src_name.split('/')
          if len(parts) > 3 and parts[2] == 'zoneinfo':
              dst_name = '/'.join(parts[2:])
              yield src_name, dst_name
docs: Returns a list of tuples for names that are tz data files.