<filename>vendor/tango_tree/config.py
import os
import sys

# load binary_tree
path = os.path.abspath('..')

if path not in sys.path:
  sys.path.append(path)

del path

<filename>vendor/tango_tree/config.py
import os
import sys

# load binary_tree
path = os.path.abspath('..')

if path not in sys.path:
  sys.path.append(path)

del path

# load binary_tree