class_docstr: Term-Frequency document model (term = word).
class_docstr_tok: ["Term-Frequency","document","model","(","term","=","word",")","."]
code: def terms(self):
      return self._terms.keys()
  
file_path: sumy/sumy/models/tf.py
imports: from __future__ import absolute_import
  from __future__ import division, print_function, unicode_literals
  import math
  from collections import Counter
  from pprint import pformat
  from .._compat import to_unicode, unicode, string_types, Sequence
label_desc: Use image node_id 3 for calling the TfDocumentModel obj's underlying member method code with example usage: obj.terms() and returns: self