Importing modules from parent folder

Question

I am running Python 2.5.

This is my folder tree:

ptdraft/
  nib.py
  simulations/
    life/
      life.py

(I also have __init

Answer 1

I found the following way works for importing a package from the script's parent directory. In the example, I would like to import functions in env.py from app.db package.

.
└── my_application
    └── alembic
        └── env.py
    └── app
        ├── __init__.py
        └── db

import os
import sys
currentdir = os.path.dirname(os.path.realpath(__file__))
parentdir = os.path.dirname(currentdir)
sys.path.append(parentdir)