code: def root_path():
      return os.path.abspath(
          os.path.join(os.path.dirname(os.path.abspath(__file__)), "..")
      )
  
imports: import pytest
  import joblib
  import os
  import json
  import numpy
  import pandas
  from itertools import product
  import matplotlib
  from abc import ABC, abstractmethod
  import warnings
label_desc: Use image node_id 1 for calling a global function with example usage: root_path() and returns: os