title: Pandas return index name and column name function
body: <p>I am looking for pandas apply function, from which can return the tuple (index_name, column_name,value). The <strong>value</strong> is the entry in that row,col specified.
  Something like the following function,</p>
  
  <pre><code>def pair(val):
    return zip(index.name,column.name,val) 
  </code></pre>