<commit_before>class Hash
  def rename_key(keys)
    keys<commit_msg>ハッシュのキー値を入れ替える実装完了<commit_after>class Hash
  def rename_key(rename_keys)
    return_hash = {}
    self.each do |self_key, self_value|
      if rename_keys.has_key?(self_key)
        self_key = rename_keys[self_key]
      end
      return_hash[self_key] = self_value
    end
    return_hash
{'fraction_non_alphanumeric': 0.07541899441340782, 'fraction_numerical': 0.0, 'mean_word_length': 3.6025641025641026, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4708510', 'n_tokens_mistral': 141, 'n_tokens_neox': 142, 'n_words': 22}