text: import os as dir_os
  import pickle as dir_pickle
  
  def project_root_dir():
      return dir_os.getcwd()
  
  def data_dir():
      return dir_os.path.abspath(project_root_dir() + "/data")
  
  def raw_data_dir():
      return dir_os.path.abspath(data_dir() + "/raw")
  
  def processed_data_dir():
      return dir_os.path.abspath(data_dir() + "/processed")
  
  def open_pickle_file(path):
      return dir_pickle.load(open(path, "rb"))
  
  def save_pickle_file(variable, path):
      dir_pickle.dump(variable, open(path, "wb"))
  