title: Key Error from Pandas
body: <p>I have the following code in python.</p>
  
  <pre><code> d1=pd.read_excel("data1.xlsx",sheetname=0, index_col = "Time", parse_date=True)
   d1=d1.sort_index()
   for val in d1.columns:
        start_his=d1[str(val)]
  </code></pre>
  
  <p>The data1.xlsx contains </p>
  
  <pre><code>Time        Start   High    Low     End     5
  05/12/2014  28,000  31,500  27,400  29,900  29,740.00
  28/11/2014  29,450  29,450  27,950  28,250  30,190.00
  21/11/2014  30,500  30,500  28,100  29,300  30,840.00
  14/11/2014  31,750  31,750  29,600  29,900  31,200.00
  07/11/2014  32,250  32,750  30,500  31,350  31,620.00
  31/10/2014  31,800  33,000  31,300  32,150  32,230.00
  24/10/2014  31,300  32,750  30,800  31,500  32,680.00
  17/10/2014  32,000  32,150  30,550  31,100  33,270.00
  10/10/2014  34,550  34,550  32,000  32,000  33,920.00
  02/10/2014  35,000  35,000  32,400  34,400  34,560.00
  26/09/2014  34,600  35,000  33,600  34,400  34,770.00
  19/09/2014  34,350  34,750  32,200  34,450  35,070.00
  </code></pre>
  
  <p>I got the Output for the first 4 columns(Start, High, Low &amp; End) but 5th Columns shows key error. If I change the numeric '5' to any other value (i.e., Alpha numeric) it works correctly but it is not accepting numbers in column header. Please help to solve this error.</p>
  
  <p>and i got the error is</p>
  
  <pre><code>Traceback (most recent call last):
    File "ARIMA &amp; Byesian.py", line 94, in &lt;module&gt;
      start_his=d1[str(val)]
    File "/usr/local/lib/python2.7/dist-packages/pandas/core/frame.py", line 1780, in __getitem__
      return self._getitem_column(key)
    File "/usr/local/lib/python2.7/dist-packages/pandas/core/frame.py", line 1787, in _getitem_column
      return self._get_item_cache(key)
    File "/usr/local/lib/python2.7/dist-packages/pandas/core/generic.py", line 1068, in _get_item_cache
      values = self._data.get(item)
    File "/usr/local/lib/python2.7/dist-packages/pandas/core/internals.py", line 2849, in get
      loc = self.items.get_loc(item)
    File "/usr/local/lib/python2.7/dist-packages/pandas/core/index.py", line 1402, in get_loc
      return self._engine.get_loc(_values_from_object(key))
    File "pandas/index.pyx", line 134, in pandas.index.IndexEngine.get_loc (pandas/index.c:3812)
    File "pandas/index.pyx", line 154, in pandas.index.IndexEngine.get_loc (pandas/index.c:3692)
    File "pandas/hashtable.pyx", line 696, in pandas.hashtable.PyObjectHashTable.get_item (pandas/hashtable.c:12299)
    File "pandas/hashtable.pyx", line 704, in pandas.hashtable.PyObjectHashTable.get_item (pandas/hashtable.c:12250)
  KeyError: '5'
  </code></pre>