code: def search(lang=''):
      
      df = load_datasets()
      if lang == '':
          print(df[['Name', 'Dimension', 'Corpus', 'VocabularySize', 'Method', 'Language', 'Author']])
      else:
          rows = df[df.Language==lang]
          print(rows[['Name', 'Dimension', 'Corpus', 'VocabularySize', 'Method', 'Language', 'Author']])
docs: Search pre-trained word vectors by their language
      :param lang: str, default ''
      :return: None
          print search result as pandas DataFrame