title: Get list from pandas dataframe column or row?
body: <p>I have a dataframe <code>df</code> imported from an Excel document like this:</p>
  <pre class="lang-none prettyprint-override"><code>cluster load_date   budget  actual  fixed_price
  A   1/1/2014    1000    4000    Y
  A   2/1/2014    12000   10000   Y
  A   3/1/2014    36000   2000    Y
  B   4/1/2014    15000   10000   N
  B   4/1/2014    12000   11500   N
  B   4/1/2014    90000   11000   N
  C   7/1/2014    22000   18000   N
  C   8/1/2014    30000   28960   N
  C   9/1/2014    53000   51200   N
  </code></pre>
  <p>I want to be able to return the contents of column 1 <code>df['cluster']</code> as a list, so I can run a for-loop over it, and create an Excel worksheet for every cluster.</p>
  <p>Is it also possible to return the contents of a whole column or row to a list? e.g.</p>
  <pre class="lang-py prettyprint-override"><code>list = [], list[column1] or list[df.ix(row1)]
  </code></pre>