title: Python search and replace in CSV iteratively by line
body: <p>I'm looking to extend the Python solution found here:
  <a href="https://stackoverflow.com/questions/9724521/powershell-is-slow-much-slower-than-python-in-large-search-replace-operation">PowerShell is slow (much slower than Python) in large Search/Replace operation?</a></p>
  
  <p>To replace string across CSV files I use:
  <code>findReplace("c:/temp/csv", "Search String", "Replace String", "*.csv")</code></p>
  
  <p>What I'd like to be able to do is have "Search" and "Replace" be a list of terms. I cannot use re as the term is unknown prior to finding it manually.  However, since the CSV files have the same structure and may have the same string values finding the term once is sufficient to automate the process.</p>
  
  <p>Any insight on best approach would be greatly appreciated. </p>