title: Python 3 - Merging an .xls / deleting rows / removing duplicates
body: <p>I am attempting to combine 3  .xls files - and want to do this in python3.</p>
  
  <p>I need to delete the some rows first then combine them into one .xls , then remove duplicates.(i will later manipulate the data for graphs)</p>
  
  <p>I seek guidance on which modules to use that work in python3 that can achieve this effect.</p>
  
  <p>Any assistance would be greatly appreciated.</p>