code: def get_path(self, file):
          
  
          class_path = inspect.getfile(self.__class__)
          parent_path = os.path.dirname(class_path)
          path = os.path.join(parent_path,self.path,file)
          return os.path.realpath(path)
docs: Get the full path of the notebook found in the directory
          specified by self.path.