title: How to slice excel values based on row values
body: <p>Actually i am reading an Excel sheet using python i know how to slice the rows based on no's,but what i want is to slice row values based on row values...
  For example:</p>
  
  <pre><code>       col1  col2  col3
        ---------------
  row1 | sss   2     3
  row2 | ppp   4     5
  row3 | vvv   6     7
  </code></pre>
  
  <p>I need to slice row but using row values like slice(col0,sss,vvv) like this i want.so that if any row order changes also i can access that row values based on name.</p>
  
  <p>I dont need like this slice(0,4,6)...pls help me thanks in advance</p>