text: I would like to modify -h command in django project. I created a project but when I use my own help command
  python manage.py my_help
  python manage.py my_help
  python manage.py -h
  from reportlab.lib.pagesizes import A4, letter
  ImportError: No module named 'reportlab'
  You need to modify your import statements like this:
  try: from reportlab.lib.pagesizes import A4, letter except ImportError: print 'Missing dependency reportlab'
  But this is rather unusual. The usual practice is to create a requirments.txt file which can be passed to pip as follows
  pip install -r requirements.txt
  Which enables the user to easily satisfy all the requirements in one command. If you catch each
  ImportError and print out a message for each requirement, you are actually forcing the user to type pip install multiple times.