title: Error: pandas hashtable keyerror
body: <p>I have successfully read a csv file using pandas. When I am trying to print the a particular column from the data frame i am getting keyerror. Hereby i am sharing the code with the error.</p>
  
  <pre><code>import pandas as pd
  reviews_new = pd.read_csv("D:\\aviva.csv")
  reviews_new['review']
  </code></pre>
  
  <p>**</p>
  
  <pre><code>reviews_new['review']
  Traceback (most recent call last):
    File "&lt;ipython-input-43-ed485b439a1c&gt;", line 1, in &lt;module&gt;
      reviews_new['review']
    File "C:\Users\30216\AppData\Local\Continuum\Anaconda2\lib\site-packages\pandas\core\frame.py", line 1997, in __getitem__
      return self._getitem_column(key)
    File "C:\Users\30216\AppData\Local\Continuum\Anaconda2\lib\site-packages\pandas\core\frame.py", line 2004, in _getitem_column
      return self._get_item_cache(key)
    File "C:\Users\30216\AppData\Local\Continuum\Anaconda2\lib\site-packages\pandas\core\generic.py", line 1350, in _get_item_cache
      values = self._data.get(item)
    File "C:\Users\30216\AppData\Local\Continuum\Anaconda2\lib\site-packages\pandas\core\internals.py", line 3290, in get
      loc = self.items.get_loc(item)
    File "C:\Users\30216\AppData\Local\Continuum\Anaconda2\lib\site-packages\pandas\indexes\base.py", line 1947, in get_loc
      return self._engine.get_loc(self._maybe_cast_indexer(key))
    File "pandas\index.pyx", line 137, in pandas.index.IndexEngine.get_loc (pandas\index.c:4154)
    File "pandas\index.pyx", line 159, in pandas.index.IndexEngine.get_loc (pandas\index.c:4018)
    File "pandas\hashtable.pyx", line 675, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12368)
    File "pandas\hashtable.pyx", line 683, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12322)
  KeyError: 'review'
  </code></pre>
  
  <p>**</p>
  
  <p>Can someone help me in this ?</p>