class_docstr: Mapping that supports bytes keys
class_docstr_tok: ["Mapping","that","supports","bytes","keys"]
code: def keys(self):
      return list(self.iterkeys())
  
imports: import unittest
  import dbm
  import shelve
  import pickle
  import os
  from test.support import os_helper
  from collections.abc import MutableMapping
  from test.test_dbm import dbm_iterator
  from test import mapping_tests
label_desc: Use image node_id 7 for calling the byteskeydict obj's underlying member method code with example usage: obj.keys() and returns: list