title: TypeError: '_io.TextIOWrapper' object is not callable
body: <p>When I test my code:</p>
  
  <pre><code>def read_classification_from_file(path, name):
          path = add_slash(path) + name
          myfile = open(path, "r")
          mydict = {}
          for line in myfile():
                  x = line.split(" ")
                  x[1]=x[1].replace("\n","")
                  mydict[x[0]]=x[1]
          return mydict
  def add_slash(path):
          if path.endswith('/'): return path
          return path + '/'
  </code></pre>
  
  <p>I receive error : </p>
  
  <pre><code>   Traceback (most recent call last):
      File "spamfilter/solution/test_quality_for_corpus.py", line 59, in test_allPredictionsHam
      q = self.compute_quality_for_corpus(CORPUS_DIR)
      File "/local/ulohy/env/data/4893_1/quality.py", line 9, in compute_quality_for_corpus
      truth_dic = utils.read_classification_from_file(corpus_dir, "!truth.txt")
      File "/local/ulohy/env/data/4893_1/utils.py", line 5, in read_classification_from_file
      for line in myfile():
      TypeError: '_io.TextIOWrapper' object is not callable
  </code></pre>
  
  <p>So, I just font understand, where the error is. </p>
  
  <p>Thank you!</p>