title: Getting NameError: name 'countVectorizer' is not defined in Pycharm
body: <p>Need help with the error
  NameError: name 'countVectorizer' is not defined in PyCharm</p>
  
  <p>I am trying to execute the FEATURE EXTRACTION code from this source
  <a href="https://github.com/chdoig/pytexas2015-ml" rel="nofollow noreferrer">https://github.com/chdoig/pytexas2015-ml</a></p>
  
  <p>File Name: 1-Feature_extraction.ipynb</p>
  
  <pre><code>import numpy as np
  import pandas as pd
  
  
  train_data = pd.read_csv('labeledTrainData.tsv',sep='\t')
  print(train_data)
  print(train_data.iloc[1].review)
  
  test_data = pd.read_csv('testData.tsv',sep = '\t')
  print(test_data)
  
  import matplotlib.pyplot as plt
  import seaborn as sns
  
  train_data['review_len'] = train_data.review.apply(len)
  len_pl = plt.hist(train_data.review_len.values)
  plt.show(len_pl)
  
  #describe negative reviews
  print(train_data[train_data.sentiment==0].describe())
  print(train_data[train_data.sentiment==1].describe())
  
  #inspecting outliers
  print(train_data[train_data.review_len==52].review.all())
  print(train_data[train_data.review_len==13708].review.all())
  
  #word exrtaction
  
  from sklearn.feature_extraction.text import CountVectorizer
  
  vocab = ['awesome', 'terrible']
  simple_vectorizer = countVectorizer(vocabulary=vocab)
  bow = simple_vectorizer.fit_transform(train_data.review).todense()
  print(bow)
  </code></pre>
  
  <p><strong>Error/Warning:</strong>
  C:\Users\hi\PycharmProjects\Practice2\venv\Scripts\python.exe C:/Users/hi/PycharmProjects/Practice2/P1.py
  C:\Users\hi\PycharmProjects\Practice2\venv\lib\site-packages\sklearn\externals\joblib\externals\cloudpickle\cloudpickle.py:47: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    import imp
  Traceback (most recent call last):
    File "C:/Users/hi/PycharmProjects/Practice2/P1.py", line 32, in 
      simple_vectorizer = countVectorizer(vocabulary=vocab)
  NameError: name 'countVectorizer' is not defined</p>
  
  <p>Process finished with exit code 1</p>