SYMBOL INDEX (12 symbols across 3 files)

FILE: gen_idf.py
  class MyDocuments (line 12) | class MyDocuments(object):    # memory efficient data streaming
    method __init__ (line 13) | def __init__(self, dirname):
    method __iter__ (line 19) | def __iter__(self):
  function main (line 27) | def main(argv):   # idf generator

FILE: segmenter.py
  function segment (line 7) | def segment(sentence, cut_all=False):

FILE: tfidf.py
  class IDFLoader (line 8) | class IDFLoader(object):
    method __init__ (line 9) | def __init__(self, idf_path):
    method load_idf (line 15) | def load_idf(self):       # 从文件中载入idf
  class TFIDF (line 30) | class TFIDF(object):
    method __init__ (line 31) | def __init__(self, idf_path):
    method extract_keywords (line 36) | def extract_keywords(self, sentence, topK=20):    # 提取关键词
  function main (line 55) | def main(argv):