text: import os.path as osp
  import sys
  
  def add_path(path):
      if path not in sys.path:
          sys.path.insert(0, path)
  
  this_dir = osp.dirname(__file__)
  
  # Add lib to PYTHONPATH
  lib_path = osp.join(this_dir, 'lib')
  add_path(lib_path)