title: PYTHONPATH exported multiple times when added to .zprofile
body: <p>I recently was trying to add a directory to PYTHONPATH using .zprofile and it worked, but it adds the directory over and over again so when I echo $PYTHONPATH it shows /Users/will/Python: over and over maybe 1000 times or so. This is what I have in my .zprofile so far.`# .zprofile/.bash_profile</p>
  <p>#DIRS=(/Users/will/Python/**) # Store all the subdirectories in this variable
  DIRS=(/Users/will/Python)
  export PYTHONPATH=${(j&lt;:&gt;)DIRS}:$PYTHONPATH  # prepend those subdirectories to PYTHONPATH</p>
  <p>` In need of help. :(</p>