The Tor Browser / file revision

 #! /usr/bin/env python

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this

 # file, You can obtain one at http://mozilla.org/MPL/2.0/.

 import os

 import sys

 # set the cuddlefish "root directory" for this process if it's not already

 # set in the environment

 cuddlefish_root = os.path.dirname(os.path.dirname(os.path.realpath(sys.argv[0])))

 if 'CUDDLEFISH_ROOT' not in os.environ:

     os.environ['CUDDLEFISH_ROOT'] = cuddlefish_root

 # add our own python-lib path to the python module search path.

 python_lib_dir = os.path.join(cuddlefish_root, "python-lib")

 if python_lib_dir not in sys.path:

     sys.path.insert(0, python_lib_dir)

 # now export to env so sub-processes get it too

 if 'PYTHONPATH' not in os.environ:

     os.environ['PYTHONPATH'] = python_lib_dir

 elif python_lib_dir not in os.environ['PYTHONPATH'].split(os.pathsep):

     paths = os.environ['PYTHONPATH'].split(os.pathsep)

     paths.insert(0, python_lib_dir)

     os.environ['PYTHONPATH'] = os.pathsep.join(paths)

 import cuddlefish

 if __name__ == '__main__':

     cuddlefish.run()