title: Python: Iterating over every file in directory
body: <p>Using python, I am trying to take a list of emails in .txt format and delete anything after a specific keyword, "Original message", in order to delete the part that I sent. All of the emails are currently saved to a directory via a VBScript in Outlook. Each email is its own .txt file which I would like to cycle through them all in the one file.</p>
  
  <p>If there is a way to replace all text between two keywords that would also work as I have a program that combines the emails into one long .txt file.</p>
  
  <p>I apologize if I left out any important information, this is my first time posting here</p>