title: Pandas: Looking up the list of sheets in an excel file
body: <p>The new version of Pandas uses <a href="http://pandas.pydata.org/pandas-docs/dev/generated/pandas.io.excel.read_excel.html#pandas.io.excel.read_excel" rel="noreferrer">the following interface</a> to load Excel files:</p>
  
  <pre><code>read_excel('path_to_file.xls', 'Sheet1', index_col=None, na_values=['NA'])
  </code></pre>
  
  <p>but what if I don't know the sheets that are available? </p>
  
  <p>For example, I am working with excel files that the following sheets</p>
  
  <blockquote>
    <p>Data 1, Data 2 ..., Data N, foo, bar</p>
  </blockquote>
  
  <p>but I don't know <code>N</code> a priori.</p>
  
  <p>Is there any way to get the list of sheets from an excel document in Pandas?</p>