title: Copy file if it doesn't already exist
body: <p>I'm fairly new to python, and I'm wondering how I can copy and paste a file from one location to another with first checking to see if the copied file exists in the destination folder?</p>
  
  <p>The reason I want to check if the file exists is this script will be put on a task scheduler and run on a set schedule, so I don't want to be copying everything every single time, just those files that don't exist in the destination folder?</p>
  
  <p>Thanks in advance!</p>